Gruel adjectives are listed in this post. Each word below can often be found in front of the noun gruel in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing GRUEL.
hot, little
meal, oatmeal
thick, thin
warm
Hope this word list had the adjective used with gruel you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.
Gross