Tack för maten!
I just finished https://www.duolingo.com/skill/sv/Food-2/ and didn't see "Tack för maten" in it. I don't think it was included in the first food skills. I think it's important to note that it is (or was) a common custom to thank the mother (or whoever cooked) for the food after one eats. Can that phrase and note be added?