Cake (6)
There are a few possibilities for this:
swiss roll
'cake' is the definition.
(I know that gateau is a type of cake)
This is all the clue.
(Other definitions for gateau that I've seen before include "Rich dessert cake" , "Cream dessert cake" , "Richly decorated cake" , "Cake for Pierre" , "Creamy dessert cake" .)
'cake' is the definition.
(eclair is a type of cake)
This is the entire clue.
(Other definitions for eclair that I've seen before include "cream-cake" , "Type of cream cake" , "Long (but not long-lasting) cake" , "something at teatime?" , "Lacier type of confection" .)
'cake' is the definition.
(sponge cake is a kind of cake)
This is all the clue.
(Other definitions for sponge that I've seen before include "Aquatic invertebrate -- type of cake" , "Sea creature often found in bathroom" , "Animal that absorbs liquid" , "'Porous, absorbent substance (6)'" , "Porous mass of fibres found in the ocean" .)
'cake' is the definition.
(I know that Swiss roll is a type of cake)
This is all the clue.
(Other definitions for swiss roll that I've seen before include "piece of cake?" , "Type of sponge cake" , "Somehow sponge" , "Tumble down the ski slopes maybe" , "teatime treat?" .)