Other forms: toothsomely
Toothsome describes something that's absolutely delicious, like a bite of your famous flourless chocolate cake.
You can use the adjective toothsome when you need a new way to say "yummy" or "scrumptious" or "tasty." It's a word that seems to come up often in restaurant reviews: "The hamburger was overcooked, but the accompanying French fries were quite toothsome." This is the earliest meaning of toothsome, from the 1560's — later it came to also be used for describing a pretty girl.