Bring water to boiling point, remove and introduce the pear tomato to peel it later.
Peel the scarlet shrimp and cook the heads in olive oil until golden brown. Add the chopped shallots, leek, garlic, carrot and let it cook. Peel and chop the tomatoes.
To the previous saucepan, add the white wine and cook over high heat until it evaporates. Add the broth and the tomato, and cook for ten minutes.
Remove the heads, mash, add the purple potato and cook over low heat for fifteen minutes. Add the carabineros, cook for a couple of minutes more and plate.