You can make it strong or weak (3)
I believe the answer is:
tea
'you can' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'it strong or weak' is the wordplay.
I cannot quite see how this works, but
'it' could be 't' (abbreviation. e.g. in 'tis) and 't' is present in the answer.
The remaining letters 'ea' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'make' is the link.
Can you help me to learn more?
(Other definitions for tea that I've seen before include "(Infused) drink; meal" , "leaves much to be desired?" , "- - for Two (song)" , "Meal/drink" , "Cuppa" .)