cortado cold brew tower

cold brew tower instructions
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- 420g Kenya or whatever light roast we have.
- ground on the bunn on the black line between regular and coarse.
- trace cupping cup on a bunn filter and cut it out.
- rinse ceramic filter & place in coffee chamber. add coffee. add filter.
- put coffee chamber in place on tower.
- make sure spigot is closed. fill ice chamber with ice to 2500ml. then top up with cold water until water reaches 3000ml mark (about 1.5L).
- with ~40°C water in a gooseneck kettle, wet coffee gently until no dry spots are left.
- open spigot slightly. adjust so that drops are 2 seconds apart.
- wait 18hrs or until done.