Some seaweed I blend together is fit to eat (6)
I believe the answer is:
edible
'fit to eat' is the definition.
(I've seen this before)
'some seaweed i blend together' is the wordplay.
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'EDIBLE' is hidden in the letters of 'seaweed i blend together'.
'is' acts as a link.
(Other definitions for edible that I've seen before include "Fit to be used as food" , "Like some mushrooms" , "Esculent" , "suited to diners" , "Palatable" .)