Fordo journal
4 min read · July 17, 2026
Grind the same coffee twice, once coarse and once fine, and brew both the same way. One cup comes out thin and sour, the other bitter and muddy. The bean didn't change. The surface area did, and surface area is most of what brewing is.
Water pulls flavor out of coffee at a speed set by how much ground surface it touches. Fine grounds expose more surface, so extraction runs fast. Coarse grounds expose less, so it runs slow. Match the grind to how long your brewer holds water against the coffee and you get a balanced cup. Mismatch it and no recipe can save you.
Under-extracted coffee tastes sour, thin, sometimes faintly salty: the water left before it finished the job. Over-extracted coffee tastes bitter and drying: the water stayed too long and started pulling out the harsh stuff. Dose, temperature and time all matter, but grind size is the lever that moves the cup furthest per adjustment. Get it roughly right for your brewer and everything else becomes fine-tuning.
A French press holds water and coffee together for minutes, with only a mesh plunger between the grounds and your cup. That long contact time calls for a coarse grind. Extraction stays slow enough to keep the cup sweet, and the mesh can actually catch the particles. Our house recipe: 1:15 ratio, say 30g coffee to 450g water, steep 4 minutes, press gently. At checkout, that's the Coarse option. It suits a comfort coffee like Timor Leste Full Washed, which is nutty, low in acidity, and hard to ruin.
Pour-over is a percolation brew. Water passes through the bed once, so it gets one shot at extraction. A medium grind, roughly the texture of coarse sand, gives the water enough resistance to spend around 2:30 to 3:00 in the cone without stalling. Our home recipe is 15g coffee to 250g water. Pick Medium at checkout. Brighter lots like Kerinci Honey were made for this: the pear and sugarcane only show up when extraction is even.
The Aeropress combines immersion, light pressure, and a paper filter, which makes it the most forgiving brewer on this list. A grind on the finer side of medium suits its short brew time — that's exactly where our Fine option sits. Our starting point: 15g coffee, 200g water, stir, press at 90 seconds. Fine at checkout covers it.
Espresso forces water through the bed in under 30 seconds at high pressure, so it needs a grind finer than anything we pre-grind — and it drifts within days of grinding, faster than a shipped bag can survive. That's why there is no espresso option at checkout: order whole bean and dial in at your machine, starting around a 1:2 ratio in 25 to 30 seconds. A blend like Autumn Thunder is built for exactly this job: bold body, low acidity, steady through milk.
Ground coffee starts losing aromatics within days. Whole beans hold on for weeks. If you own a grinder, even a modest hand grinder, order Whole bean and grind right before you brew. It is the single biggest upgrade most home setups can make.
No grinder yet? Pick the option that matches your brewer: Coarse for the French press, Medium for V60 or Chemex, Fine for Aeropress. Espresso is the exception — that one really wants whole bean and a grinder. Then brew it while it's fresh. The first two weeks after roast are where the coffee does its best work.