Osmanthus sauce can be used to make many different delicacies. Here are a few suggestions:

1. Candied haws with osmanthus sauce: Heat the osmanthus sauce until thick and dip the gourd skewers in it. While the osmanthus sauce is still hot, soak it in ice water and repeat several times until a thick layer of sugar coating forms.

2. Osmanthus jam cake: Mix the osmanthus jam and cake together to make a cake batter, and then bake it in the oven.

3. Osmanthus sauce glutinous rice cake: Add glutinous rice flour to water and stir evenly to make glutinous rice_. Press it into flat slices, add osmanthus sauce, and spread it evenly with your hands to make glutinous rice cakes.

4. Osmanthus sauce jelly: Add osmanthus sauce to water and stir evenly to make a paste. Add the jelly to hot water, cook it and soak it in ice water. Finally, add the osmanthus sauce to make it taste better when eating.

In short, osmanthus sauce is a very good condiment. In addition to the above methods, you can also use it in the cooking of pastries, meats and vegetables to make the flavor richer.