colors,” Langstaff says over a rising happy-hour din. We need to know the difference between a green light and a red light. It’s not so important to know the difference between bitter and sour, skunky and yeasty, tarry and burnt. “Who cares. They’re both terrible. Ew. But if you’re a brewer, it’s extremely important.” Brewers and vintners learn by exposure, gradually honing their focus and deepening their awareness. By sniffing and contrasting batches and ingredients, they learn to speak a language of flavor. “It’s like listening to an orchestra,” Langstaff says. At first you hear the entire
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