Anvil Bar & Refuge bartender Alex Gregg wanted to update a boilermaker for the Houston bar’s menu of Southern-inspired cocktails. “You can’t get more Southern than a shot of whiskey and a beer,” says Gregg, whose Rooster Cogburn puts an elegant spin on the beer cocktail. Texas gets a shout-out with a simple syrup made from Lone Star lager, while traditional cane syrup gives the drink its richness and an egg adds “luxurious body.”