Kyoto style cold brew drips iced water slowly through a bed of coffee, rather than leaving the coffee to soak. It is made in a tall drip tower and takes several hours, and the coffee picks up a clean, sweet, almost liqueur like character.
The drip rate is everything. Aim for about one drop every second or two, and check it now and then, as it slows as the tank empties.
Jar concentrate
A rich concentrate steeped overnight on the bench, then filtered.
100 g · 1:8 · 12 to 16 hours
Ready to drink
A weaker ratio steeped in the fridge, so there is nothing to dilute.
70 g · 1:14.3 · 16 to 20 hours
Kyoto slow drip
Iced water dripped through coffee, one drop at a time.
50 g · 1:10 · 4 to 8 hours
Stumptown's cold brew
A whole bag of coffee, a big batch and a 16 hour steep.
340 g · 1:5.6 · 14 to 18 hours
Change any amount and the whole recipe scales with it.
Grind 50 g of coffee and put it in the coffee chamber of the tower. Shake it level.
Wet the grounds evenly with 50 g of cold water so the drip runs through them evenly.
Lay a paper filter on top of the coffee, so the drops spread out instead of digging a hole.
Fill the top tank with 450 g of water and ice.
Open the valve and set it to about one drop every second or two.
Leave it for 4 to 8 hours, checking the drip rate now and then, until the tank is empty.
Serve over ice, as it is or with a little water, and keep the rest sealed in the fridge.
Grind a little finer, steep for longer, or use less water when you dilute it.
Steep for less time or grind a little coarser. Old or very dark coffee can also taste flat and woody.
Filter it through paper after the sieve, and pour slowly so the sludge at the bottom stays behind.
Once filtered, keep it sealed in the fridge and drink it within about a week. It tastes best in the first few days.
From independent roasters on A Cup Of Stories, in stock first.

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