Is clutching two litres and causing problems (4)
I believe the answer is:
ills
'problems' is the definition.
(as in the ills of society)
'is clutching two litres' is the wordplay.
'clutching' indicates putting letters inside.
'two litres' becomes 'LL' (the abbreviation for 'litre' repeated).
'is' enclosing 'll' is 'ILLS'.
'and causing' acts as a link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for ills that I've seen before include "big problems" , "Sicknesses or harms" , "Evils or sicknesses" , "they're troublesome" , "infections" .)