I want to know the answer to the following question:
What kind of grapes are made into vinegar?
All the background I'm provided with is that "In North America, the most common grape juice is purple and made from Concord grapes, while white grape juice is commonly made from Niagara grapes, both of which are varieties of native American grapes, a different species from European wine grapes.". Is that enough to answer the question?
Answer: no