It’s an unlikely beer-drinking toast: “Here’s to L-T-P-One!” Yet, the secret to optimal foam in the head of a freshly poured brew, according to food science research, is just the right amount and kind ...

Many beer aficionados consider the perfect pour to be a science. Selecting the proper glass, tilting it at the perfect angle, determining how quickly to allow the brew to flow from the bottle—to us, ...