Cakes from home consumed in excess intermittently (7)
I believe the answer is:
eclairs
'cakes' is the definition.
(eclair is a type of cake)
'home consumed in excess intermittently' is the wordplay.
'home consumed' becomes 'lair' (I can't justify this - if you can you should give a lot more credence to this answer).
'in' indicates putting letters inside.
'intermittently' means one should take alternating letters.
The alternating letters of 'excess' are 'ecs'.
'lair' placed into 'ecs' is 'ECLAIRS'.
'from' acts as a link.
Can you help me to learn more?
(Other definitions for eclairs that I've seen before include "Cream cakes" , "Elongated cream puffs" , "Oblong pastries" , "Choux pastries with cream and chocolate icing" , "Oblong cream puffs" .)