A friend told me recently that you shouldn't put banana skins into the
compost box, as they take many years to degrade. Was he correct
please? We've been including them for a long time and I'm sure we've
not seen any recognisable ex-bananas in our resultant compost.

[Compostible? Compostable? My OED doesn't tell me.]

--
Terry, East Grinstead, UK