Going by Tamp Coffee’s definition, an Americano is hot water poured over a double shot of coffee.
One is hot water and then coffee; the other is coffee and then hot water.
The ratio for this small and powerful concoction is 1-1, meaning that Tamp Coffee puts 18g of coffee in and gets 18g of liquid out.
The most basic unit is a 1-2 proportion, Tamp Coffee says, meaning that 18g of coffee going into a machine will produce a 36g yield.
All coffee types explained, from Americano to ristretto Tamp Coffee’s post did spark some debate about specifics, but the fundamentals are there.
