There are many variations; they may be filled with jam or haupia; cinnamon may be added to the sugar; they might be drizzled with melted chocolate or other sauces. The best, I think, are the simplest. You can find them in California at Aloha Festivals.
Giovanni’s Shrimp Truck Scampi
The truck offers shrimp three ways, cooked in lemon and served with butter; boiled in hot sauce ("No refunds" the menu warns next to this one) and their version of ...