You make cold brew coffee without any heat at all by immersing grounds in water for a long time. There are different methods that produce either concentrate or

You make cold brew coffee without any heat at all by immersing grounds in water for a long time. There are different methods that produce either concentrate or ready-to-drink, and some chill in the fridge during the brew process and some leave it out on the counter. Lots of options, though the distinction is that none uses hot water.