palate cleanser

noun2

1. •
   A serving of food or drink intended to remove food residue from the tongue, typically served between courses so that the diner can more accurately assess a new flavour.

   • Pickled ginger is used as a palate cleanser between sushi pieces.
2. •
   (figurative) Anything that serves as a temporary break or variation from the norm.

   • Working something like the Sloan case would get justice for a family and serve as a palate cleanser for me. — 2021