Defrost the prawn skewers. Peel and wash potatoes, cut into pieces and cook in salted water covered for 15-20 minutes.
Clean, wash, shake dry and chop the rocket salad coarsely. Peel garlic. Cut 1 clove into thin slices. Crush 2 cloves finely.
Heat 1-2 tablespoons of oil in a large frying pan. Fry the skewers and garlic slices for 3-4 minutes, turning them over. Season with salt and pepper.
Drain the potatoes. Add milk and 2 tablespoons of oil. Mash everything finely. Stir in crushed garlic. Season to taste with lemon juice, pepper and salt if necessary. Fold in rocket. Arrange prawn skewers and garlic puree.