Creating delicious Spanish Patatas Mozárabes is straightforward, and here’s how you can do it:

1. Prepare the Potatoes: Peel and cut the potatoes into evenly-sized cubes. Rinse them under cold water to remove excess starch and pat them dry.
2. Chop the Onion and Garlic: Finely chop the onion and mince the garlic cloves to enhance flavor absorption.
3. Heat Olive Oil: In a large skillet, heat the olive oil over medium heat until shimmering.
4. Sauté Onion and Garlic: Add the chopped onion and minced garlic to the pan. Sauté until the onion becomes translucent, about 4-5 minutes.
5. Add Potatoes: Incorporate the potato cubes into the skillet. Stir well to coat them in onion and garlic.
6. Season the Potatoes: Sprinkle the smoked paprika, cumin, salt, and black pepper over the potatoes. Stir to ensure even coverage.
7. Cook Until Tender: Cover the skillet and cook on medium-low heat for about 20-25 minutes, stirring occasionally until the potatoes are tender and golden brown.
8. Incorporate Vinegar: Once the potatoes are cooked, add the vinegar to the skillet and mix well, allowing it to infuse into the dish.
9. Optional Ingredients: If desired, add diced bell peppers or chorizo in the last few minutes of cooking for added flavor.
10. Garnish and Serve: Once ready, remove from heat and garnish with freshly chopped parsley before serving.

These steps ensure that you achieve the perfect Spanish Patatas Mozárabes, bursting with authentic flavor while maintaining an enjoyable texture.