Preparation materials: onion 1, tomato sauce, butter, black pepper, oregano leaves, sugar and salt.

1. Prepare ingredients: tomato sauce, black pepper, butter, sugar and onion.

2. Dice the onion and chop the garlic.

3. Mash the minced onion and garlic in a stuffing blender.

4. Pour the oil into the pot. When the oil is hot, add butter.

5. After the butter is completely melted, add the minced onion and stir-fry, then add tomato sauce, black pepper, sugar, oregano leaves and appropriate amount of water.

6. Finally, stir fry until the sauce is cooked.