My grandmother, who died in 1973, gave me her recipe for green tomato chutney many years before her death. She also gave it to my mother and my aunts and probably the whole of the village where she lived. I've posted it here in reply to a request and no doubt all my relatives and their relatives, ad infinitum, have done something similar.
So who owns the copyright on that recipe?
A little common sense is required here. If your friend gave you the recipe and didn't say that you must never give it away then I think it's yours to do with as you please.
Donít look for the light at the end of the tunnel. Stomp along and switch the bl**dy thing on yourself.