Hot Fudge Sauce Recipe

When I was a college student, I found my sanity in wax paper cups of ice cream with hot fudge sauce from Herrell's in Harvard Square. It was the kind of treat that was small enough not to seem overly unhealthy — my grandma eats ice cream with hot fudge sauce every day, and she’s 93 — but large enough to assuage any stress that exams, professors, or snow might contribute to my life. I ate ice cream all winter, all fall, and all spring. So here I bring to you my recipe for hot fudge sauce, and perhaps the best-ever way to use it: Atop a decadent brownie (or cookie or blondie, for that matter) sundae. — Cara