2 ounces mild blue cheese (such as Roquefort or Saint Agur), crumbled
¼ cup buttermilk
¼ cup mayonnaise
¼ cup sour cream
1 tablespoon fresh lemon juice
Kosher salt, freshly ground pepper
2 tablespoons unsalted butter, melted
½ cup hot pepper sauce (such as Frank’s)
½ teaspoon cayenne pepper
Kosher salt, freshly ground pepper
Vegetable oil for frying (about 10 cups)
¾ cup cornstarch
3 pounds chicken wings, tips removed, drumettes and flats separated
4 celery stalks, cut into thin sticks
Deep-fry thermometer