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All About Coffee
__—— The Coffee Page:  Am I obsessive about coffee?
No, I don’t think so.  Fussy, yes...  but I’m not the first person to be fussy about making coffee at home, for good reasons!  Drinking fresh coffee is a real joy, but drinking stale coffee ain’t and, once exposed to air, coffee goes stale incredibly quickly.  Beans typically last only a few days before they are completely stale and tasteless – bad news at home where only small quantities get used per day.
Some coffee-lovers always buy coffee from a café at about $3–4 each – too rich for me!  Others use a coffee POD machine at home (less than $1 per cup), but I can do better than that!  I don’t have an expensive high-end domestic or commercial-level espresso machine – I have a low-end domestic machine – but I do enjoy café-quality coffee at home, and at a reasonable price.
Even with excellent espresso equipment, it is quite possible to make shit coffee!  Here are some tips I have picked up over the past decade or so:

__—— The 1, 2, 3 of making great coffee at home:  Not a perfect solution, but good enough to satisfy a fuss-pot like me.  Here are the 3 main issues:
Main Issue #1.  ALWAYS buy good quality beans.
  • I buy only high altitude-grown Colombian beans, grown close to 2000m altitude in the Sierra Nevada mountains, but any high altitude growing area close to the Equator would be acceptable.  High altitude Arabica beans, especially single-source beans, not a blend, are more expensive – growing slowly, crop yields are low, but they have less bitter aftertaste.  I find ‘Italian-Blends’, which have Robusta beans mixed with the Arabica, too bitter.
Main Issue #2.  ALWAYS store beans in a completely airless environment.  Purpose-made coffee-cans or bags are hermetically sealed with one-way valves to allow gases (mostly carbon dioxide) from the roasting process out but no air in.  If there is ANY air inside them, the beans oxidize, and quickly go stale despite being inside a sealed container.  The major cause of staleness for home users is that beans can’t be used fast enough after opening a bag.
  • I buy sealed 1kg bags of beans online, so my order is roasted and delivered within a few days of ordering...  much fresher than store-bought beans.
  • ...once I crack the seal on a 1kg bag I immediately decant the beans into smaller containers.  I completely fill two hermetically-sealing coffee-cans (each about 400g).  Being brim-full, with no air inside, those cans will stay fairly fresh...
  • ...and the 200g left over goes into a plastic zip-lock sandwich bag – the ‘slider’ type of bag, not the finger-pinch type.  To make coffee, I scoop beans from the sandwich bag, then roll up the bag to squeeze air out before resealing it.  When I open a can, that fills two zip-lock bags.  This can-&-bag technique is simple, but it works!!
Main Issue #3.  ALWAYS freshly-grind beans immediately before making coffee.
  • Never bulk-grind beans.  When exposed to air, ground beans go stale in only a few hours.  Immediately before making coffee, I grind only enough for what I need.  Any small residue is discarded – it will be stale before I need to make my next coffee.
  • Get the grind granule size right!  The recommended grind for an espresso machine is ‘visible granules a bit finer than table-salt’ – but this probably won’t be at the ‘Espresso’ setting on the grinder’s adjustment scale!  Once you get the grind right, leave the grinder on that setting.

__—— July 2020 – Grinding Ahead:  I have now purchased 3 coffee grinders.  The oldest was big, heavy, ground a little too coarsely, and had an offset vertical output spout with a serious grind retention problem (see Ground Zero, below).  It was replaced with a smaller machine that ground just fine but had a horizontal output spout so HAD TO use a catcher jar...  and was extremely messy!  I spent more time cleaning up than grinding, which annoyed me so much that I upgraded again.  Grinder #3 is slightly bigger, grinds very well, and has an inline vertical output spout (with a small grind retention problem).
I don’t grind directly into a portafilter because that’s a messy technique, too.  I grind into an empty Peanut Butter jar!  The neck of the jar happens to be 54mm diameter, the exact size of my espresso machine’s portafilter-basket, so it can be used as a dosing cup!  See pic, right – I no longer spill a single granule.  Whoopee! – neat, tidy coffee, at last.

__—— May 2020 – Brew Methods:  The four main aspects of making nice coffee are:
• dosing (grinding exactly enough beans); • grind fineness (avoiding under- or over-extraction); • puck distribution and tamping; • brew-pour.
For dosing, I DO NOT fill the grinder’s hopper with beans – that would be enough to last a week, with the beans going steadily stale.  I use a simple plastic scoop that holds exactly enough beans for a single shot.  I just scoop enough beans into the empty hopper for what I immediately need, then let the grinder work until it stops grinding.  Distributing the grounds for even pressure (See Flattery, below) and tamping is a knack that, once mastered, can be easily repeated.
For the espresso machine, most use a timed pour – for mine, about 9-11 seconds (after the pre-infusion cycle ends) is about right for a single-shot, about 20 seconds for a double.  Some machines use a fluid volume measurement system with a one-shot or two-shot selection choice...  but I prefer the more forgiving time-based system.  I can also SEE how much has been poured!

__—— March 2020 – Ground Zero:  I noticed that, if I bumped my grinder after making a cuppa, it dumped a small pile of grounds on the bench-top.  Not a lot, little more than a ‘pinch’.  The output chute from the conical grinder-head relies entirely on gravity...  and ground coffee granules are very light.  Some grounds don’t fall out the bottom after the grinder stops or just cling to the walls of the output chute.  This is known as ‘Grind Retention’
With every scoop I was getting some stale grounds from the previous scoop!  So now my coffee-making ritual includes two extra steps:  after grinding, I firmly pat the hopper lid to dislodge grounds still hanging in the conical grinder burrs, then tap the whole grinder onto the bench-top a few times to make sure that ALL the grounds fall out, and there are none hanging in the machine to pollute my next cup of liquid gold.  Yes, that’s being fussy, but it’s a simple step taking an extra two seconds.  So I reckon my coffee now tastes a tiny bit fresher...

__—— January 2020 – Flattery:  Getting ground coffee FLAT in the filter-basket before tamping is called ‘distributing’ and is more important than getting the tamping pressure accurate.  Most people start with a ‘mound’ of grounds in the basket before tamping, so they end up with a highly-compressed wad in the middle and a less-compressed ring around the outside.  Water, under pressure, just flows into the lower-pressure zone so that not much flavor gets extracted from the high-pressure zone – which is where most of the grounds are!  It’s necessary to get the grounds flat, but using no pressure, BEFORE tamping, so that there is an even spread of pressure after tamping.  You can buy small leveling tools for that purpose, but a few gentle strokes with a finger does the same job.  Another 2-second brew habit that adds slightly to makling a better cuppa.

__—— November 2019 – Downsizing:  I never eat breakfast – I have a morning coffee and, during the past few months, have been making a Ristretto instead of my normal single-shot long black, because the taste is a bit richer and stronger, better for waking me up, I reasoned.  But my morning routine is pretty invariable and that coffee is started while sitting at the computer dealing with emails and other distractions...  so it often isn’t finished!  Quelle tragédie!  I usually get about half-way through it before it goes cold and a microwaved coffee just doesn’t taste the same as a fresh one.  The half-cup goes down the drain.
A Ristretto uses twice as many beans as a single-shot, so having one stronger coffee per day was wasteful if I drink only half of it.  Hmmm...  I might just downsize to a short black in a Demitasse cup, instead.  A short black is richer than a long black (no extra water in it), and a Demitasse (sometimes called a Piccolo, but that’s the volume, not the cup) is 2½oz. instead of a 4oz. Alto cup – small enough to easily finish, even if it is like ‘drinking from a thimble’, and my fingers don’t fit through the tiny handle.

__—— December 2018 – Source rationalization:   Arabica beans came from Africa, not Arabia – they were originally grown in the mountains of Ethiopia but traded by Arabs in Yemen, so were named Arabica to indicate that.  Brazilian growers established huge plantations but lost nearly all of their crops to a disease known as ‘Rust’ in the early 20th Century, so created a Rust-resistant cultivar suitable for South American conditions.  In South America, there are two ‘bean belts’ with high-altitude rain forest slopes, where the growing conditions for Arabica coffee are perfect.  Above the equator, a belt runs through Colombia.  Below the equator, another belt runs through Peru and Brazil.  I don’t think it matters much which grower a local coffee importer buys its raw beans from – what matters locally is how they are roasted, packaged and distributed – how fresh they are when YOU buy them.  I’m sure that Peruvian or Brazilian beans are very good, but I have discovered a source for dark-roast, freshly-roasted Colombian beans (I don’t much enjoy light- or medium-roasted beans of any sort, so much milder and more fruity African beans don’t appeal) so I haven’t bothered to explore different sources.  I’ll just stick to what I know to be bloody good.

__—— August 2018 – Coffee-speak:   Recently, I had to find a substitute for the brand of Colombian coffee beans I normally buy, which had been discontinued.  I found one strain that was Fair-Trade, single-source, 1750m-altitude...  and was described in glowing terms if you can cut through all the pretentious wank used today to describe coffee – almost as pretentious as the language used to describe wine.  I don’t believe for a second that my cup of coffee has ‘peach and avocado flavors with citrus overtones, infused with walnut and almond traces.’  I might agree that it has a very slight nutty smell, but that’s about all.

__—— November 2016 – New Espresso machine!
My espresso machine developed a small leak and Alister jumped in and bought me a new machine!  Unlike my previous espresso machine, this one turns itself off after 15 minutes of inactivity, so I am ALWAYS making coffee on a cold machine – that means cold water-pipes, group-handle, filter-basket and cups.  For a commercial machine, an auto-off function would be bloody annoying, but for a domestic machine it makes sense – there are electrickery savings to be made!  Here’s the solution:  microwave a soup-bowl of water for 1 minute before making coffee – that’s enough time to grind the beans and get ready.  Plunge the portafilter into the hot water, get it hot, then the cup(s), so that everything is up to temperature when you actually make the coffee, and using the soup-bowl doesn’t use any water from the machine’s water-tank.  OK, the routine is slightly more complex, but the machine does come up to pressure and temperature in about one minute, so I can tolerate that.

__—— May 2013 – Coffee Filters:
Domestic espresso machines are supplied with double-walled filter-baskets – the actual little cup in the business end of the ‘Portafilter’ where you put the coffee grounds.  There is a 1mm gap between the inner wall ( lots of little holes ) and the outer wall ( just one little hole ) and this causes a lot of back-pressure, so that the espresso machine’s water-pump has to push hard to force hot water through the filter...  that regulates the flow, causes the water to completely fill the filter, and allows the goodness to be extracted from all the grounds.  That double-wall gap gradually silts up and the filter eventually blocks.  They are nearly impossible to un-block, so you have to buy replacement filters.
Commercial machines use single-wall filter-baskets to avoid that problem.  So I bought a set ( one single-shot; one double-shot ) and learned how to use them – basically they need firmer tamping to compress the grounds more, so that the water-pump still has to push hard, still fills the entire filter for uniform extraction, still takes the same amount of time to deliver a ‘shot’.  But I can now make coffee with a single-wall filter that tastes the same as one made with a double-wall filter.  Whoopee!  At least I shoudn’t need to buy new filters regularly now.

__—— Other Contributing Factors:
  1. Officially, a single-shot of coffee is 30ml – the size of a ‘shot glass’, although most domestic espresso machines deliver a slightly larger shot of about 35-40ml.  When it first emerges from the filter it is rich, creamy, honey-colored and sweet.  Beautiful stuff.  By the time a ‘shot’ has been poured, though, the goodness of the grounds has then been extracted, and you can then see the output stream change color again...  it quickly turns into grey, toxic swamp-water from the Black Lagoon, so it’s essential to stop pouring well before it reaches that stage.  Some espresso machines use a fluid-volume measurement method to determine the strength of a single- or a double-shot espresso.  My machine uses a timing method.  A single scoop of beans, ground, fills a single-shot filter, and I give that an 8-10-second pour to make a single-shot coffee.  For a double-shot, it’s two scoops of beans in a bigger filter and a 20-second pour.
  2. It helps that, living in semi-rural Maleny, I use filtered rain-water to make my coffee – my tap-water doesn’t taste like the local community swimming pool.
  3. Lastly, cup size is important.
    • For a short black, a 2½oz ( 75ml ) “Demitasse” cup – sometimes called a Piccolo, although this is the volume, not the cup;
    • For a long black, ‘Americano’*, or ‘Portuguese macchiato’**, a 3½-4oz ( 100-120ml ) “Alto” cup;
    • For a cappuccino, latté, ‘Italian macchiato’ or mocha, a 6oz ( 175ml ) “Grande” cup***.  I don’t use those pretentious latté glasses, mostly because Americans prefer weaker coffee, and that means that the available latté glasses are just too bloody big – it’s hard to find a 6oz. size...  and the latté tastes the same in a cup anyway.
      • While on that subject, many Australians say that they prefer a cappuccino, but they like lots of milk, so what they actually prefer is a latté.  That’s the main difference – a cappuccino has ¼-cup milk foamed to about 3 times that volume, while a latté has a third-cup, but foamed to only about twice that volume.  A ‘Cappullatté’, perhaps?
    • For a Mug of coffee of any type, but which still retains a genuine espresso strength, an 8oz ( 250ml ) mug using the double-shot filter is about as large as I can go.  If you like your coffee in a bucket, go to a café – you could ask them to serve your food in a trough, too.

__—— Summary:  So those are the steps I take to keep my coffee quality up to café standards, and most of the day-to-day effort is in using the can-&-bag storage method to preserve freshness.  Sure, that’s a little more trouble than most people bother to take, but much better than drinking stale crap most of the time, and enjoying nice fresh coffee only when I open a new bag of beans!  No, thanks – I will just continue to be fussy...  and smug, too, because I get somewhere around 150 fresh-tasting, café-quality ‘shots’ out of a 1kg bag over 5 weeks.  My per-cup cost is around 32¢ – only about $1.20 per day!  The miser in me can feel quite pleased about that.
So if you visit me, you’ll have to accept my Prima Donna, penny-pinching coffee-making rituals.  I notice, however, that few visitors criticize my coffee quality, so I’m sure that you’ll manage to put up with my caffien-fueled eccentricity.

* As far as I can figure, the only difference between a European Long Black and an ‘Americano’ is that Europeans pour the water first, then add the coffee shot, to ‘preserve the crema’ – Americans pour the coffee shot first, then top up with water.  I prefer to use the Americano method, because the hot water effectively stirs the coffee, but I still add only enough to fill an Alto cup – not a bucket like Americans prefer, and the crema is still quite good.
** The Italian word ‘macchiato’ means ‘smear’ or ‘stain’, and was originally used throughout Europe to denote a long black coffee with a small smear of milk.  When the first machines for foaming milk appeared during the 1980s, though – but only in Italy – it changed to mean the complete opposite: a cup of foamed milk with a shot of coffee poured into it to make a black smear in the white foam.  Italians now use the term ‘Portuguese Macchiato’ for a ‘black with a smear of white’.  In the USA they adopted the Italian ‘white with a smear of black’ version of macchiato... but super-sized ( of course! ) into a large latté glass.
*** In Europe the Alto and Grande standard coffee cups are slightly smaller than the sizes I use.  I hear them criticized as ‘drinking from thimbles’ but you won’t get a true espresso taste from a larger cup because the actual shot of coffee is only ±30ml, or ±60ml for a double-shot.  Many people – certainly a majority in the USA/Canada, and now a growing minority in Australia, too – prefer huge mugs ( 10-16oz – 310-500ml ) even though they just get piddly-weak coffee-tinted milk or water.  But that’s what they seem to prefer...    Yeccch!

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