My friend has about 50 lbs of red and green grapes we will be harvesting this weekend...does it work well to mix them together to make one single batch of wine - or should we separate them?
That's not many grapes however. So your answer would depend on what sort of grapes they are, what kind of wine you are after, and what sort of equipment you have on hand (carboy sizes, etc).
What are the grape varieties? I can’t imagine blending a bold red variety (Merlot, Cab Sauv, Malbec) with any white and fermenting both together. Frankenwine?
My friend has about 50 lbs of red and green grapes we will be harvesting this weekend...does it work well to mix them together to make one single batch of wine - or should we separate them?
It used to be required for Chianti to have some white grapes (>10% Malvasia Bianca, if memory serves) to meet the DOC specs. That is no longer the case, though.
In the Northern Rhone region, it is common/traditional to use some Viognier in with Syrah. I will admit that I do not know if those cases were cofermented or not, but I think they were.