Start to taste each beverage (3)
I believe the answer is:
tea
'beverage' is the definition.
(tea is a kind of beverage)
'start to taste each' is the wordplay.
'start to' indicates taking the first letters.
'each' becomes 'ea'.
The initial letter of 'taste' is 't'.
't'+'ea'='TEA'
(Other definitions for tea that I've seen before include "Afternoon meal (3)" , "Leaves for brewing" , "Earl Grey?" , "Strangely, one may eat this drink" , "- - for Two (song)" .)