Drink containing your sticky stuff (5)
I believe the answer is:
syrup
'sticky stuff' is the definition.
(I've seen this before)
'drink containing your' is the wordplay.
'drink' becomes 'sup' (I've seen this before).
'containing' indicates putting letters inside.
'your' becomes 'yr'.
'sup' placed around 'yr' is 'SYRUP'.
(Other definitions for syrup that I've seen before include "Thick sugar solution" , "Sugary ingredient" , "See 12" , "Boiled sugar solution" , "Thick sweet sticky liquid" .)