Potato Cubes with Tomato-Garlic Vinegar Sauce

Method

1. Peel and cut potatoes into 1-inch cubes
2. Soak in cold water for 30 minutes, then drain and pat dry
3. Heat olive oil in a large skillet over medium heat
4. Add potatoes and fry until golden brown, about 8-10 minutes
5. In a separate pan, sauté onion and garlic until softened
6. Add tomatoes, vinegar, paprika, cayenne, salt, and pepper
7. Simmer for 15-20 minutes until sauce thickens
8. In a small bowl, mix sour cream, mustard, and a pinch of salt