Etna/Sicily wine tour recommendations?

Hello everyone,

I am a wondering if you all could help me. I am a somm and someone I know is traveling etna to do some wine tasting. They asked me for recommendations on where to go and things of that nature. I know of some “classic” producers but all in all, I don’t know much about producers in Sicily. Does anyone have any recommendations on what wineries/vineyards to visit/drink in Sicily?

Thank you.