COMBINE all sauce ingredients in a bowl.
WHISK together until combined.
PREPARE the batter by combining eggs, baking soda, buttermilk, lemon juice, flour, cornstarch, garlic powder and kosher salt in a large bowl.
WHISK together until combined.
HEAT oil in a fryer to 380° F.
DIP Catfish chunks into batter and place in fryer.
COOK 5 minutes or until golden brown.
TOSS fried Catfish with sauce and serve with toothpicks.