In the early '70s a cook named Bob Detweiler got tired of making "just burgers," so he made up this recipe (his wife, Julie, the manager, suggested the cheese topping). It became an instant hit, and they've had it on the menu ever since.

Ingredients

The Det Mix:

• 1/3 cup drained, sliced canned whole green chiles
• 1/3 cup sliced pitted oil-cured black olives
• 1/3 cup sliced sauteed cremini mushrooms

For the hamburgers:

• 2 tablespoons unsalted butter
• 2 tablespoons vegetable oil
• 4 James Beard's Favorite Hamburger patties, recipe follows
• 4 slices onion
• 1/4 cup beer, plus more as needed
• 4 slices cheddar cheese
• 4 toasted hamburger buns

Directions

• James Beard's Favorite Hamburger
• Recipe courtesy Beard on Food, Running Press, 2000
• 2 pounds chopped beef chuck or round
• 1 onion
• 1 tablespoon heavy cream
• Freshly ground black pepper, to taste
• Unsalted butter
• Vegetable oil, as needed
• Kosher salt, to taste