For the Burgers

2 pounds ground chuck
1/2 cup bourbon
2 tablespoons Worcestershire sauce
1 tablespoon dried oregano
1 tablespoon ground cumin
1 1/4 teaspoons coarse sea salt
1 teaspoon freshly cracked black pepper
6-8 slice sharp white cheddar cheese
6-8 ciabatta buns {or small burger buns, whatever you prefer}
2 tablespoons salted butter, room temperature

For the Onions

2 tablespoons unsalted butter
1 large Vidalia onion, halved and thinly sliced
1/2 teaspoon coarse sea salt
1/4 teaspoon freshly ground black pepper
1/2 teaspoon dried oregano
1/2 teaspoon ground cumin
1/4 cup bourbon
1 tablespoon light brown sugar