Flavourful dried ingredient (5,4)
I believe the answer is:
stock cube
(Other definitions for stock cube that I've seen before include "Six-faced soup ingredient" , "Dehydrated item used in making soups and sauces" , "Meat or vegetable extract used in soups and stews" , "Six-sided dehydrated block used in cooking" , "Ingredient of soup or casserole" .)