If you've spent money on a wild anaerobic maceration or a thermal shock lot from one of the European roasters we carry, you'll know two things: how good they can be, and how easy it is to get them wrong. The bag says peach candy or strawberry cream. The cup comes out harsh, drying, or so boozy it's hard to drink.
Most of the time that isn't a fault in the bean. It's a question of how much you pull out of it, and how evenly.
Why these coffees ask for a different approach
Long fermentations and thermal shock processing load a coffee with intense, volatile flavour compounds: bright fruit acids, heady aromatics, and the ester and alcohol notes that read as "boozy." That density is the whole appeal. It's also why the margin between vivid and overdone is so narrow.
The compounds you want tend to come out early in the extraction. The heavier, more bitter and astringent ones come later. With a more conventional washed coffee you've got room to be a bit careless and still land somewhere pleasant. With a heavily processed lot, the good stuff is concentrated and the line is close, so it's easy to keep extracting past the point of clarity and end up with something flat and drying.
Worth setting expectations on the booze, too. That alcohol character comes from the processing itself, not from anything you do at the brewer. You can make it more or less prominent by how hard you extract, but you can't brew it away. If a lot is fundamentally boozy, it'll stay a boozy coffee. That's the style, not a mistake.
The other thing to manage is agitation. Stir and swirl aggressively and you wash fine particles down into the paper, where they slow the flow and leave parts of the bed sitting in water longer than the rest. The result is uneven extraction: some of the cup over-pulled and bitter while the rest is under-developed. A calmer pour keeps the bed even and the flow steady.
So the brief is simple. Extract enough for sweetness and clarity, stop before the harsh compounds arrive, and keep the bed even the whole way through.
The setup
Brewer. A Hario V60 with a fast-flowing paper, or a high-flow flat-bottom brewer like the Orea V3/V4. You want a brewer that drains freely so you stay in control of contact time.
Grind. Medium — roughly the texture of table sugar. Too fine and you choke the filter; too coarse and the water runs straight through without picking up sweetness.
Water. 91–92°C. Slightly cooler than a standard brew. It slows things down and leaves more of the woody, bitter end of the spectrum behind.
Ratio. 1:16.6 — 15g coffee to 250g water. A standard starting point (60g per litre) and a sensible default for these coffees. If a particular lot feels overwhelming, you can open it up a little, towards 1:17 or 1:18, to soften the intensity.
The pour
Total water 250g. Aim to finish drawing down around 2:30–2:45.
Bloom — 0:00 to 0:45, 50g. Wet the whole bed evenly. Rather than a hard swirl, give the brewer one gentle tilt, or use a stir stick, just enough to clear any dry pockets. Leave it 45 seconds to degas.
Second pour — 0:45 to 1:20, 100g (to 150g total). Bring the spout down close to the surface, a couple of centimetres, so the stream lands softly. Pour in slow, tight circles about the width of a coin, working across the centre of the bed.
Final pour — 1:20 to 2:00, 100g (to 250g total). Same calm, low pour up to your target. Don't swirl or tap at the end. Let it draw down on its own. Because you've kept the force low, the level recedes evenly and the bed stays flat, with the fines resting on top rather than blinding the paper.
What you get
A cup that leads with the fruit and aromatics the lot was processed for, with a clean finish and none of the dry, bitter edge that comes from pushing extraction too far. The funk is still there if the coffee has it — you're just presenting it well rather than burying it.
The coffees this guide is written for are in our Experimental coffee collection — anaerobic, yeast-assisted and thermal shock lots, restocked as they land.
If it's still not right
Drying or astringent. You've over-extracted. Coarsen the grind a notch or two, keep the temperature at 91°C, and make sure your pours are calm. Astringency is usually the heavy end of the extraction arriving — back off rather than push harder.
Too boozy. Some of this is the coffee, and no amount of brewing removes it. But you can dial it down by extracting a little less: cooler water, a slightly coarser grind, gentler pours. If it's still too much, it may simply be a more intense lot than suits you.
Sour or thin, like lemon juice. Under-extracted — you haven't pulled enough sweetness through. Keep your grind and pour the same and bump the temperature up to 94°C to push the extraction a fraction further.