For the past five years, we’ve been diving deep into the world of cocktails, with bartender Jason O’Bryan—now the lead mixologist at Michelin three-star Addison—leading the way. Over that time we’ve explored the history, people, and places that have created endless variations on the core cocktail templates. Yet, as far afield as we go, sometimes featuring drinks that break all the rules, we do enjoy coming back to the classics. These are the drinks that form the basis of the cocktail cannon; largely all created before sour mixes and disco-era drinks dominated menus around America. Here are the 30 classic cocktail recipes you should know.