1 cup mayonnaise
1/2 teaspoon cayenne powder
Kosher salt and freshly ground black pepper
1 cup drained and finely diced roasted red peppers
12 ounces extra-sharp white Cheddar, coarsely grated
12 ounces extra-sharp yellow Cheddar, coarsely grated
1 1/2 pounds ground chuck (80/20 percent)
2 tablespoons canola oil
4 hamburger buns, split and toasted
8 slices double-smoked bacon, cooked until crisp
4 slices Vidalia or other sweet onion, grilled
4 thin slices ripe beefsteak tomato
1 large dill pickle, thinly sliced
Romaine lettuce leaves, optional