Wash the potatoes thoroughly. Fill into a pot and pour half of it with water. Sprinkle with sea salt, bring to the boil briefly. Put a folded tea towel between the pot and the lid.
Cook the potatoes at high heat for about 20 minutes (water should be evaporated; salt crackles at the bottom of the pot). Peel garlic and press it through a garlic press. Wash and chop the herbs. Add cumin, 120 ml oil and 3 tablespoons of vinegar, also puree in a mixer.
Season to taste with a little salt, if necessary dilute with a little water. Wash and clean the chilli pepper and cut into fine rings. Stir into the mojo. Wash and clean the tomatoes and cut them into eighths. Peel onion and chop finely.
Season 2 tablespoons of vinegar with salt, pepper and sugar. Add 2 tablespoons of oil. Stir in onion. Mix the tomatoes with the vinaigrette. Arrange the potatoes hot and unpeeled with tomato salad and green mojo.