There is nothing quite like the crackle of a spoon breaking through a layer of nearly-burnt sugar. Often the sensation presents itself after being served crème brûlée, where the caramelized top classically hides vanilla custard, but it also can be enjoyed when diving through the surface of a brûléed grapefruit. In the latter case, your treat is a spoonful of tangy, sweet citrus with a crisp, toasty coating. This mocktail recipe captures the flavor of grapefruit brûlée in a refreshing way for those times when you’d prefer a glass to a spoon. Sometimes it’s impractical to serve grapefruit halves with the rest of your meal, or maybe it’s too scorchingly…