Blue cheese & rosemary mayo
1/4 cup mayonnaise
1 teaspoon red wine vinegar
1 1/2 ounces strong blue cheese, such as a Gorgonzola naturale, at room temperature
1/2 teaspoon fresh rosemary, finely chopped
1/4 teaspoon garlic powder
1 pinch pinch sugar
1 pinch kosher salt
Freshly ground black pepper
Blue cheese burger
1/4 pound ground beef brisket (or your favorite burger meat)
1 tablespoon raw grated onion
1 teaspoon Worcestershire sauce
1/2 teaspoon fresh rosemary, finely chopped
1/2 teaspoon ground cumin
1/2 teaspoon ground cinnamon
1 pinch kosher salt
Freshly ground black pepper
Grape-seed or other high-heat oil
1 brioche bun, sliced in half and toasted, for assembly
1 small handful arugula, for assembly
French fries or potato chips, for serving