Wash the potatoes and cook in boiling water for about 15 minutes, drain, rinse and peel. In the meantime peel and finely dice the onions. Wash oregano, dab dry and remove leaves. Chop leaves. Peel and chop garlic. Soak toast in water, squeeze out and knead with minced meat, egg, garlic, half of the onion cubes, oregano and mustard.
Season with salt, coriander and pepper. Form about 12 small balls from the minced meat. Heat 2 tablespoons of oil in a pan. Fry the meatballs for about 8 minutes. Halve or quarter the potatoes. Wash the rosemary, except for something to decorate, remove the needles from the twigs and chop finely. Heat the fat in a pan. Fry the potatoes briefly, add rosemary. Fry the potatoes for about 8 minutes, turning them golden brown. Carve tomatoes crosswise and put them briefly in boiling water. Then rinse with cold water and peel the skin. Cut tomatoes into quarters, remove seeds and dice.
Fry the potatoes briefly, add rosemary. Fry the potatoes for about 8 minutes, turning them golden brown. Carve tomatoes crosswise and put them briefly in boiling water. Then rinse with cold water and peel the skin. Cut tomatoes into quarters, remove seeds and dice. Heat 1 tablespoon of oil in a pan. Fry the rest of the onion until transparent. Add the diced tomatoes. Add sherry and vegetable stock and bring to the boil. Season sauce with sugar, salt and pepper to taste and thicken with sauce thickener. Season potatoes with salt. Arrange meatballs with sauce and rosemary potatoes on plates and garnish with remaining rosemary
Fry the rest of the onion until transparent. Add the diced tomatoes. Add sherry and vegetable stock and bring to the boil. Season sauce with sugar, salt and pepper to taste and thicken with sauce thickener. Season potatoes with salt. Arrange meatballs with sauce and rosemary potatoes on plates and garnish with remaining rosemary