Relish cream with lardy-cake on vacation (6)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

PICK (cream = the best of something, as in “the pick of the crop” or “the cream of the crop”) + L [ardy-cak] E . Pickle = a type of relish = strongly-flavoured food accompaniment made from vegetables and/or fruit.