toothsome (adj.)
"pleasant to the taste," 1560s, from -some (1) + tooth in a figurative sense of "appetite, taste, liking" attested from late 14c. (compare sweet tooth, also figurative use of palate). The extended sense of "attractive" (1550s) is attested earlier.
How Does the article describe toothsome and what does it refer to?
A: “Toothsome” has meant tasty—in the literal sense of good to eat—since the 16th century. ... Since teeth and eating are so closely connected—etymologically as well as in everyday life—it's not surprising that “tooth” has long had figurative meanings related to the sense of taste.
What is the root of palatable?
Palatable comes from palate, a Latin-derived word for the roof of the mouth.