Why the grind decides everything

An espresso machine forces water through coffee at nine atmospheres. A pour-over uses a paper filter to hold the bed in place. The South Indian filter has neither. Water sits on the grounds and gravity does the rest.

That means grind size is not one variable among several. It is the whole mechanism. Too coarse and the water runs straight through, giving you something thin and grey that no amount of milk will rescue. Too fine and the bed compacts, the drip slows to nothing, and you are left tapping the side of a vessel that has quietly decided to stop.

The grind that works sits in a narrow band, closer to fine than most people expect, but stopping well short of powder. It should feel like caster sugar between your fingers, not flour.

This is why we sell the coffee already ground. A burr grinder set for espresso will take you past the band; one set for pour-over will not reach it. Both blends leave us ground for the vessel they are meant for, and nothing else.