Moisten in roasting some lamb as tender (5)
I believe the answer is:
baste
'moisten in roasting' is the definition.
'baste' can be an answer for 'moisten' (basting is a kind of moistening). I am not sure about the 'in roasting' bit.
'some lamb as tender' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'BASTE' is hidden in the letters of 'lamb as tender'.
Can you help me to learn more?
(Other definitions for baste that I've seen before include "Tack with long, loose stitches" , "Moisten (joint)" , "Pour hot cooking juices over" , "Moisten while cooking" , "Beat" .)