Instant iced Hot coffee
One of my coworkers really likes iced coffee but prefers the taste of hot brewed coffee so we came up with a contraption to chill the coffee as it's brewed. We're using a 500mm graham condensor with a funnel at the top. A fish pump pushes ice water around the coil. Temp drops from near boiling to low 40 degrees. If we brew in a separate device (chemex/aeropress) it takes about 3 passes to get in the low 40's with ice water, but only two passes with salty ice water that we've gotten down to 20f. If we do a single brew and use v60 filters in the cone at the top it gets to low 40s without the need for extra passes. Coffee tastes really good and we're delighted with how it turned out.
One of my coworkers really likes iced coffee but prefers the taste of hot brewed coffee so we came up with a contraption to chill the coffee as it's brewed. We're using a 500mm graham condensor with a funnel at the top. A fish pump pushes ice water around the coil. Temp drops from near boiling to low 40 degrees. If we brew in a separate device (chemex/aeropress) it takes about 3 passes to get in the low 40's with ice water, but only two passes with salty ice water that we've gotten down to 20f. If we do a single brew and use v60 filters in the cone at the top it gets to low 40s without the need for extra passes. Coffee tastes really good and we're delighted with how it turned out.