The method is as follows:

1. Prepare materials. 1 can of sweet noodle sauce, 1 tablespoon of sesame oil, 30 grams of sugar, and 1 tablespoon of vegetable oil.

2. Prepare a wok and add a spoonful of vegetable oil. When the oil is hot, reduce the heat to low, pour in the sweet noodle sauce and stir-fry until the noodle sauce becomes fragrant.

3. Add 30 grams of sugar and a little purified water, continue to stir-fry until the sugar is completely melted into the sweet noodle sauce, and then take it out of the pot. Because the sweet noodle sauce has a salty taste, you need to add sugar.

4. Sprinkle a spoonful of sesame oil before putting it in the pot to increase the aroma of the sweet noodle sauce. After putting it on a plate, stir it slowly with a spoon for about 5 minutes, and the roast duck sauce is ready.