melt in your mouth

melt in (one's)/the mouth

Of food, to be soft or tender, and, typically, delicious. The phrase is often quite literal. This decadent chocolate cake positively melts in the mouth. I've never had such a perfect steak in my life! I swear, it melted in my mouth.
See also: melt, mouth

ˌmelt in your ˈmouth

(of food) be soft and very good to eat: They serve steaks that just melt in your mouth.
See also: melt, mouth