The Double Cheeseburger at Fair Oaks Burger stacks two char‑broiled beef patties with American cheese, lettuce, tomato, onions, pickles, and a house-style sauce on a soft toasted bun. The kitchen leans into an old-school roadside stand style, so the patties get a noticeable flame-grilled flavor and light smokiness that set it apart from flat‑top versions.[1][3] Bites stay juicy without feeling overly heavy, and the shredded lettuce and fresh tomato add crunch and brightness against the melted cheese. Many regulars single out this burger as the thing to order when they want a classic, no‑nonsense version in Altadena.[2][3]