Yours truly sprinkling bleach around sauce (8)
I believe the answer is:
bechamel
'sauce' is the definition.
(I know that bechamel is a type of sauce)
'yours truly sprinkling bleach' is the wordplay.
I cannot really see how this works, but
'yours truly' could be 'me' (the person who set this crossword) and 'me' is located in the answer.
an anagram of 'bleach' is 'bechal' which is located in the remaining letters.
No letters remain.
This explanation may well be incorrect...
'around' is the link.
Can you help me to learn more?
(Other definitions for bechamel that I've seen before include "Mix of milk, butter and flour" , "Milk thickened with a butter and flour roux" , "milky sauce!" , "Rich white sauce" , "White 7" .)