Tips that
actually work.

A kitchen scale is the single highest-return upgrade you can make to your coffee setup. It costs $15-30 and fixes the biggest variable in home brewing: inconsistency.

The problem with scoops
Coffee density varies significantly between roasts and origins. A scoop of light roast Yirgacheffe weighs about 20% less than a scoop of dark roast Brazilian. Eyeballing means you're measuring volume, not mass — and brewing ratio is always mass-based.

What ratio to use
Start with 1:15 for filter (15g coffee to 225ml water) and 1:2 for espresso (18g in, 36g out). Adjust from there based on taste. Once you're measuring, you can actually reproduce results.

Coffee is 98-99% water. If your water tastes weird, your coffee will taste weird. This seems obvious but it's the most overlooked variable in home brewing.

The chlorine problem
Most Australian tap water contains chlorine or chloramine as a disinfectant. These compounds don't just add an off-flavour — they interfere with the extraction chemistry and suppress the aromatic compounds you're trying to taste.

The mineral problem
You also need some minerals in the water for proper extraction. Distilled water actually produces worse coffee than tap water because it's too pure — there's nothing to grab onto the flavour compounds during extraction. The sweet spot is filtered tap water (removes chlorine, keeps minerals).

The fix
A basic Brita filter is enough. Fill it, use it, taste the difference. It's the cheapest upgrade you'll ever make.

Coffee beans are at their best between 3-21 days after roasting. After that, the CO2 that protects the volatile aromatics starts to dissipate, and the flavours go flat. After 4-6 weeks, the oils oxidise and the coffee tastes musty or papery.

Why supermarket coffee is usually terrible
Supermarket coffee is roasted months before you buy it. By the time it's packaged, shipped, warehoused, shelved, and purchased, it's often 3-6 months post-roast. No matter how fancy the bag looks, stale is stale.

Where to get fresh beans in Australia
Most specialty roasters ship within 1-3 days of roasting. Try Ona Coffee, ST Ali, Proud Mary, Market Lane, or a local specialty roaster. Many will ship nationally. The price difference between supermarket and specialty is $5-10 per 250g — for daily coffee drinkers, that's literally 10-20 cents per cup.

Espresso is pulled at around 90-94°C. A cold ceramic cup can drop the drink temperature by 5-10°C before the first sip. In a 60ml ristretto, that's a significant portion of the drink. Temperature affects how you perceive flavour — especially sweetness and acidity.

The fix
Run the group head (the bit where the portafilter attaches) for 5-10 seconds before pulling your shot. This also flushes out old water that's been sitting in the boiler.

Fill your cup with hot water from the group head or steam wand while the shot is pulling. Empty it before the shot drops in. Takes 5 extra seconds. Makes a real difference.

The most common espresso troubleshooting question is "why does my shot taste bad?" The answer is almost always grind size.

The flavour map
Under-extracted coffee (too coarse, too fast) tastes sour, sharp, and thin. Over-extracted coffee (too fine, too slow) tastes bitter, dry, and harsh. Properly extracted coffee tastes sweet, balanced, and has a clean finish.

The target
For a standard double espresso: 18g in, 36g out, in 25-30 seconds. If it runs faster, go finer. If it runs slower, go coarser. Change one variable at a time and taste every shot.

The fridge myth persists because people assume cold = preserved. But refrigeration introduces two big problems for coffee: moisture and odour absorption.

The right storage
Airtight container, away from light, at room temperature. A dedicated coffee canister with a one-way valve (lets CO2 out, keeps oxygen out) is ideal. The original bag with the valve works fine too if you reseal it properly.

The freezer is actually fine (with caveats)
If you buy in bulk, the freezer works well — but only if you freeze in single-use portions in airtight bags, and let them come to room temperature before opening. The issue with freezing isn't temperature, it's condensation when the bag opens. Get it right and you can freeze beans for up to 6 months without flavour loss.

Coffee contains oils that build up on every surface they touch — your portafilter basket, the group head, the steam wand. Left alone, those oils oxidise and go rancid. Every shot you pull extracts a little of that rancid oil into your cup.

Daily
Rinse the portafilter and basket after every use. Run blank shots through the group head. Purge the steam wand before and after frothing.

Weekly
Backflush with blind basket and cleaning tablet. Wipe down the steam wand with damp cloth immediately after each use (milk proteins bake on quickly).

Monthly
Soak the portafilter basket in a cleaning solution overnight. Descale if your water is hard.