Using a Nice Zero and a cold Drip tower, my recipe is 60g somewhat finer than a pour over (30-40 is a sweet range), lightly condense, add a prewetted filter, bloom with 100g off boil water for ten minutes after add 800g ice water, adjust the drip rate to about one drop every second and then let it finish in about ten to 12 hours. Once finished you should have about 700g water, occasionally add an additional 100g water to dilute. I use this Dutch Coffee Cold Drip Tower which gets the job done, but I wish there was more space in the middle coffee section.
Just a BasicBitchBarista dialing in coffees