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The National Institute on Alcohol Use and Alcoholism lists that a serving of alcohol in any beverage is .6 fluid ounces (14 grams of pure alcohol). That's just the ethanol without any dilution. With wine's large variation in ABV for different types, there's also a range of alcohol servings in a standard 750 mL bottle.
ABV | Example | Servings of Alcohol in 7 mL | Wine per Serving |
5.5% to 7.5% | Moscato d'Asti | 2.3 to 3.2 | 8 to 11 ounces |
8% to 9.5% | Riesling | 3.4 to 4 | 6.3 to 7.5 ounces |
10% to 11.5% | Lambrusco | 4.2 to 4.8 | 2.6 to 3.1 ounces |
12% to 13.5% | Bordeaux | 5.1 to 5.7 | 2.2 to 2.5 ounces |
14% to 15% | Cabernet sauvignon | 5.9 to 6.3 | 2 to 2.1 ounces |
Source - National Institute on Alcohol Use |
There are other, less common bottle sizes. However, in general, these are just multiples of the 750 mL bottle. For example, a magnum holds 1.5L, double a regular bottle, and a double magnum holds 3L, doubling the number of servings found in a magnum. A split holds 375 mL, so it cuts the number of alcohol servings in half.
Types of Vintage Marbles | Approximate Values |
Solid Core Swirl | $15 - $200 |
Divided Ribbon Core Swirl | $10 - $75 |