Great enthusiasm for two natural products (6)
I believe the answer is:
furore
'great enthusiasm' is the definition.
'furore' can be an answer for 'enthusiasm' (thesaurus). I'm not certain of the 'great' bit.
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for furore that I've seen before include "Frenzy, uproar" , "Storm" , "Public indignation" , "Uproar, hullabaloo" , "An uproar, outbreak of fury" .)