A newcomer to Central is Mono Lab, a cafe specialising in bagels, coffee, and shisha. You can customise your espresso tonic ($60) and choose from three different kinds of single-origin espresso beans and four types of tonic water. They recommend first-timers to go for the Nordic tonic water for a balanced drink, while those who prefer more delicate flavours can order the elderflower tonic to pair with Ethiopian Guji Dasaya beans, which lend citrus and floral notes.
In contrast to how tonic water is used to accentuate the taste of espresso in the E&T, Mono Lab aims to transform the profile of their Okinawan cold brew by using Indian tonic for their cold brew tonic ($78). Instead of the usual nutty and wine-like tones in their cold brew, you can anticipate hints of malt and cider in this bubbly version.