Why espresso is hard
Espresso concentrates everything you've done wrong all week into 30 seconds: stale coffee, wrong grind, uneven distribution, water too hot or too cold. Everything lands in the 36g of liquid you drink in 3 sips.
The good news: once you calibrate your setup, you get consistency. The bad news: at the start, you'll throw out coffee every day until you nail it.
The classic recipe — the 18:36 ratio
You'll need
- Espresso machine with 9-bar pump (Gaggia Classic, Rocket, La Marzocco)
- Espresso grinder — manual (1Zpresso) or electric (Eureka, Niche)
- Tamper 58mm (or your portafilter size)
- Scale with 0.1g precision and integrated timer
- 18g coffee, freshly roasted, 5-21 days
Steps
- Heat the machine 15-20 minutes (very important)
- Grind 18g of coffee fine (caster sugar texture)
- Distribute evenly — with a WDT tool or gentle tap
- Tamp 15-20kg, level, in a single motion
- Lock in the portafilter, scale underneath
- Start the shot — add the timer on the scale
- Target: 36g of liquid in 25-30 seconds
How to read the shot
Flowing too fast (under 20s)
- Coffee under-extracted — sour, hidden flavor
- Solutions: finer grind, larger dose, harder tamp
Flowing too slow (over 35s)
- Coffee over-extracted — bitter, charred taste
- Solutions: coarser grind, smaller dose, lighter tamp
Flowing unevenly ("sprayer")
- Uneven distribution in the portafilter
- Solutions: WDT tool, level better, tamp more level
Coffees we recommend for espresso
Espresso best showcases coffees with body and sweetness:
- Brazil Sao Francisco — caramel, hazelnuts, perfect for milk drinks
- Peru Cajamarca — milk chocolate, velvety body
- Indonesia Java — nougat, classic profile
Milk drinks (cappuccino, latte)
Cappuccino — 1:3
- 36g espresso + 100ml steamed milk
- 150ml cup
- 1cm of foam on top
Latte — 1:5
- 36g espresso + 180ml steamed milk
- 250ml glass
- Thin foam layer
Flat White — 1:3 (microfoam)
- 36g espresso + 110ml microfoam milk
- 190ml cup
- No foam layer on top
The biggest mistakes
- Stale coffee — espresso needs caffeine and CO2 from fresh beans. Under 5 days is too fresh (under-extracted), past 21 days it's dead.
- Cold machine — don't pull a shot before 15 minutes of warm-up.
- Uneven tamping — a tilted bed translates into channeling and local under-extraction.
- No scale — "eyeballing" espresso is a recipe for disaster. The scale is essential.
- Weak grinder — espresso requires micron-level consistency. Under 1,500 RON grinder = under-performing.
Espresso is a discipline. Not a cup of coffee. But after 100 successful shots, it's the most sublime form of coffee you can make at home.