Sort the arugula, wash and shake dry. Clean, wash and cut the radicchio into thin strips. Cut the baguette into 8 pieces and cut them in from the top. Spread tartar sauce in them.
Heat 1 tablespoon of oil in a frying pan and fry the chorizos for about 8 minutes, turning them over. Peel onions and cut into strips. Peel garlic and cut into thin slices. Heat 2 tablespoons of oil, fry onions and garlic for about 4 minutes, add 1 tablespoon of sugar, 1⁄4 tsp salt and 1⁄2 tsp paprika, caramelise and deglaze with vinegar.
Pour tequila over the chorizo and light it immediately. Fill the baguettes with salad, onion mixture and chorizo.