If a girl says it’s delicious, you can reply like this: 1. Then eat more, I think you must like it.

2. I also think it tastes great. The taste you have tasted must be great.

3. As long as you think it’s good, I’ll treat you to it next time so you can always remember the taste.

4. I heard that eating more of good things will make you feel better.

5. I see that you eat so much and still maintain such a good figure. You won’t gain weight even if you eat more.

6. Delicious food must be shared to make it more delicious.

7. I think delicious food should be shared with people who have the same taste. That would be better.

8. Your taste is really good, and I am very happy to share this delicious food with you.

These replies can express your appreciation for a girl's taste, as well as your happiness and willingness to share.