A little food taken at the beach (3)
I believe the answer is:
dip
'a little food' is the definition.
'dip' can be an answer for 'food' (dip is a kind of food). I'm not sure about the 'a little' bit.
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for dip that I've seen before include "Go down" , "Move downwards" , "Sink; thick sauce" , "A brief informal swim" , "Drop" .)