all-purpose flour (about 250 grams) • onion powder • garlic powder • salt • baking powder • black pepper • large egg • beer or 1 1/2 cups (about 350 ml) • raw shrimp, peeled and deveined (about 1/2 kg) • vegetable oil (about 355 ml) • Mayonnaise mixed with chipotle peppers, for serving • Shredded red or green cabbage, for serving •