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Well, first thing to know is that there is no way to know by varietal or colour. For example there is no hard and fast truth as to whether reds or whites have more sugar. Some people will tell you that reds contain more sugar however this is usually only true of the juice at harvest time and simply results in a higher alcohol percentage. Also if someone were to ask what the calories are in a glass of Pinot Grigio, it would be impossible to answer as not enough information is supplied.

The two things you need to know are the alcohol content in percentage by volume and the residual sugar of a wine.

Residual sugar gives wine it's sweetness therefore sweeter wines have more sugar whether they be red or white. There are 4 calories per gram of carbohydrate (sugar).

Alcohol percentage can be used to determine the volume of alcohol in a serving. Ethanol has a specific density of 0.79 so multiply your volume of alcohol by 0.79 to give you the mass of ethanol present. Ethanol contains 7 calories per gram.

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11y ago

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