Add any of the extra toppings as needed and preferred. Add the rest of the burger sauce and close the burger (add the topping if needed before closing the burger). Serve with French fries and ketchup.
large leeks, white and light green parts only, thinly sliced 2 tbsp. unsalted butter 1 garlic clove, sliced Kosher salt and freshly ground black pepper Set aside 1/2 cup leeks. Melt butter in a medium ...