Mix the frozen potatoes with the flour until they are completely coated. Toss out the excess flour
In a bowl whisk together the pancake mix, garlic powder, paprika, mustard and salt. Add the beer and whisk until completely mixed and no lumps form
Working in batches, throw the potatoes inside the batter and shake off the excess using a slotted spoon
Carefully insert the battered potatoes inside a big pot of oil over medium heat. Stir to make sure the potatoes do not stick together. Fry until they are brown and crispy. About 3-4 minutes
Place the fried potatoes on a plate lined with paper towels to absorb the excess oil