I have hits today with some specific questions that I’d like to answer.
Can you eat the skin of a Concord grape? Sure. I would rinse them well first and ascertain whether they’re organic or full of pesticides. The ones I ate as a kid were full of pesticides and, not knowing any better, I plopped them in my mouth and spat out the skin and then the seeds as I was taught by the local kids.
When can you eat a Concord grape? Preferably fresh at the end of the growing season in October before the first frost. After the eating grapes are gone the rest all go into juice, and grape jelly. Some friends from Concord grape territory mash the grapes and freeze them for pies et al.
For me, they’re best right off the vine in a vineyard you’re legally picking from.
Hope this helps! Dee
Oh, they also go into wine. The Manischewitz winery was near where I grew up. Dee