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Dear Dr. Vinny,
How many glasses can you get out of a normal bottle of wine?
—Tim, Gastonia, N.C.
I’ll assume that by “normal” bottle you mean a standard 750ml bottle, which is just about 25 ounces. The USDA defines 1 serving of wine as 5 ounces (or about 150ml), which means there are about five glasses’ worth of wine in a 750ml bottle. Of course, wineglasses vary widely in size, and that can make it difficult to accurately pour a 5-ounce serving.
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