Can a compelling cocktail be made with just two primary ingredients? That's the basis for Roger Kamholz's book Pour Together, which features classic two-ingredient drinks like the Gibson. But he also includes a few recipes that, although still simple, do require some assembly, like this Sour Strawberry Highball. A homemade strawberry shrub brings a punch of tart sweetness but, Kamholz says, don't stop there. "You’re welcome to mingle with other spirits and other fruits" in this highly modifiable highball recipe.