According to AC Boone, head bartender of Nashville's Tiger Bar, guests were requesting a spicy mezcal cocktail, but to stave off the heat of Nashville's summers, she knew a blended drink was the way to go. For her Koo Koo Cooler, she combines espadin mezcal with an herbal liqueur, jalapeño-pineapple syrup, lime juice, egg whites, and some mint, creating a tropical refresher with some heat.