Preparation materials: onion 1 piece, 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. Put the diced onion and minced garlic into a stuffing mixer and mash them.

4. Pour the oil in the pot. After the oil is hot, add the butter.

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

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