Are they rolled into the porridge? (4)
I believe the answer is:
oats
'are they' is the definition.
The definition suggests a plural noun which matches the answer.
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for oats that I've seen before include "Grains used as food and fodder" , "Basis of porridge" , "Young men sow wild ones" , "Wild ones are sown in youthful excess" , "Cereal for porridge" .)