For more than half a century, coffee chains built their identity around the ritual of the hot cup — warmth, caffeine, routine. Now a generation has arrived that sees the beverage not as a morning necessity but as a form of self-authorship, and the industry is quietly rewriting itself in response. Starbucks, founded as a coffee company, now sells three cold drinks for every one hot drink, a ratio that tells a larger story about how identity, commerce, and culture converge in a plastic cup with a straw.