Steps
1. Heat some oil in a pan over medium heat.
2. Add the onions and potatoes, sauté until the potatoes are slightly golden.
3. Stir in the tomatoes and cook until they soften.
4. In a bowl, mix soy sauce and yogurt, then pour over the vegetables.
5. Season with salt and pepper, stir well to combine.
6. Cook for another 2-3 minutes until everything is heated through.
7. Serve hot and enjoy!