just did this for the first time last night and steeped coffee grounds for 18 hours, then strained it this morning.
i love the finished product so much that i'm incorporating homemade cold brew into my daily routine.
i used to use a coffee machine that had a "cold brew" setting but this method just yields smoother and better-tasting cold brew.
with milk and creamer, it becomes relatively similar to the starbucks chilled coffee drinks in glass bottles.
+1 for analog coffee.
