Mix flour, eggs, milk, mineral water and 1 pinch of salt to a smooth dough. Let the dough swell for 10 minutes. Cut mozzarella into thin slices. Spread a coated pan (26 cm Ø) in portions with a little oil (approx. 1 teaspoon in total) and heat up. Bake 4 pancakes one after the other from the dough. Cover the finished pancakes with rocket (except for a rest for the vinaigrette), ham and mozzarella. Place the tomatoes in a row on the mozzarella.
Roll up the pancakes and cut each pancake into 4 slices. Put 2 pancake snails on each wooden skewer. Mix vinegar with 4 tablespoons of water and season with salt and pepper. Add 2 tablespoons of oil. Cut the remaining rocket into fine strips and stir in. Drizzle the vinaigrette over the pancake snails