zest

What is zest?

zest is (noun) 1. enthusiasm or enjoyment Her zest for playing football made her apply to join the local club. 2. added pleasure or spice It all adds zest to the occasion. 3. a thin piece of orange or lemon peel Grate the zest of one lemon and add it to the cake mix.

 

source: Easier English, Student Dictionary Upper Intermediate Level