Ice cream retired teetotal Egyptian is eating (6)
I believe the answer is:
gelato
'ice cream' is the definition.
(I've seen this before)
'retired teetotal egyptian is eating' is the wordplay.
'retired' is a reversal indicator.
'is eating' indicates a hidden word.
'otaleg' can be found hidden inside 'teetotal egyptian'.
'otaleg' written backwards gives 'GELATO'.
(Other definitions for gelato that I've seen before include "Italian ice cream" , "Italian-style ice cream" , "treat in Milan?" , "Frozen food" .)