Two tall glass towers brew a small but exceptional cup of joe at most, if not all, Ascension Coffee locations. Ascension Coffee's Kyoto Towers resemble something out of a Breaking Bad episode, and odds are you'll see one in action when you stop by one of their locations. That's because they're used to make the coffee shop's cold brew, which requires about 12 hours. Ice water is poured into a top glass chamber. A bed of coffee grounds sits between the top and bottom chamber. Gravity takes it from there, slowly dropping the water through the coffee grounds and into the bottom chamber until it's full. The end product is a strong-as-hell coffee concentrate. It's used for Ascension's regular cold brew (which has water added to it) or their Doki Doki, the shop's nitro brew.