Prepare the Slaw: In a bowl, mix diced red cabbage, cilantro, both vinegars, ponzu/soy sauce, sugar, and seasonings. Toss well and refrigerate.
Make the Pineapple Relish: Combine diced pineapple, jalapeño, white onion, lime zest & juice, and seasonings. Stir and chill.
Mix the Bang Bang Sauce: In a small bowl, whisk together mayo, sriracha, sweet chili sauce, and soy sauce. Adjust spice to taste and refrigerate.
Prepare the Shrimp: Ensure shrimp are cleaned and defrosted. In one bowl, whisk eggs with a splash of cream (or use buttermilk). In another bowl, combine flour, corn starch, salt, pepper, garlic, and onion powder. Dip each shrimp in the egg wash, then coat in the flour mix. Place on a plate.
Fry the Shrimp: Heat oil to 350°F (175°C). Fry shrimp in batches for 3–4 minutes until golden brown and fully cooked (internal temp 145°F). Drain on paper towels.
Warm the Tortillas: Toast or warm corn tortillas in a dry skillet or oven and set aside.
Assemble the Tacos: Start with a layer of slaw on each tortilla. Add 3–4 pieces of fried shrimp. Top with pineapple relish and drizzle with bang bang sauce. Garnish with fresh cilantro.