Cereal covering uniform in horrid slime (6)
I believe the answer is:
muesli
'cereal' is the definition.
(I know that muesli is a type of cereal)
'covering uniform in horrid slime' is the wordplay.
'covering uniform' becomes 'u' (phonetic alphabet: alpha, bravo, charlie etc.. I am not sure about the 'covering' bit.).
'in' is an insertion indicator.
'horrid' indicates an anagram.
'slime' with letters rearranged gives 'mesli'.
'u' inserted within 'mesli' is 'MUESLI'.
Can you help me to learn more?
(Other definitions for muesli that I've seen before include "Breakfast mixture of oats, nuts, fruit etc" , "Type of breakfast cereal" , "Grain and dried fruit eaten with milk" , "healthy breakfast?" , "Breakfast mixture of dry cereals and fruits" .)