Makes 4 servings
My first official cooking job was in the midseventies at a bar in Ann Arbor, Michigan (where I went to college), called the Del Rio. They featured live jazz on weekends. It was a democratic place; all decisions were made by common vote and it felt like one big family. The food we cooked was not all that sophisticated – chili, hamburgers, Greek salad, and soups based solidly on jars of soup base – but I got into it and prided myself on my soups in particular (the only item for which we did not have a formula). The most popular dish on the menu was a burger called the “Det” burger, which had been developed in the early seventies by one of the cooks, Bob Detweiler, when one day he got tired of making the same old burger on a bun. He topped the basic burger with what became the “Det” mixture – drained canned mushrooms, drained canned California olives, and reconstituted dried green pepper bits, covered with a slice of onion and cheese (his wife Julie, the manager, suggested the cheese). And, here is the most important point – he steamed it in beer! It was really delicious, the sort of burger you dream about.
I have developed my own version here using fresh mushrooms, Mediterranean olives, and canned green chiles to add a little bite. Roasted peeled poblanos are even better, but not everyone can go to that trouble on a weeknight. I made the Det burgers (with the poblanos) when I did a burger show on Sara’s Secrets and Michael Romano, the chef from New York City’s three-star Union Square Cafe (who joined me to make his famous tuna burgers), insisted on taking the Det burger recipe home with him.
3 tablespoons vegetable oil
Heat 2 tablespoons of the oil in a large skillet over high heat until hot. Reduce the heat to medium; add the onion and cook, stirring occasionally, until softened, about 5 minutes. Increase the heat to medium-high; add the mushrooms and cook, stirring, until the mushrooms have browned and the liquid they release has evaporated, 4 to 5 minutes. Season the mushroom mixture with salt and pepper to taste and transfer it to a bowl; add the chiles and olives and set aside. Wipe out the skillet.
Gently shape the beef into four 4-inch burgers; season with salt and pepper. Heat the remaining tablespoon of oil in the skillet over high heat until hot. Reduce the heat to medium-high, add the burgers, and cook 3 minutes. Turn the burgers and cook 2 minutes. Top each with a quarter of the chile mixture and a slice of cheese. Add the beer to the skillet; cover and steam until the cheese has melted, about 3 minutes.
Transfer the burgers to the toasted buns and serve.
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