This story is an exclusive sneak peek of Wondercade, the newsletter from Neil Patrick Harris produced in partnership with InsideHook Studios. You can sign up — for free — to receive it right here. Coffee is perhaps the most personal of drinks. Ask a dozen people how they take it, and you’ll get a dozen different answers. (Mine is a flat white, sweet, ideally with oat milk.) The same holds for how people make their coffee. There are a host of factors that play into our morning brews.