A standard bottle of wine contains 750 ml (about 25 ounces) of liquid. The typical serving size for wine is 5 ounces (approximately 150 ml), which means a standard bottle usually provides about five glasses of wine

. However, the number of drinks can vary depending on the pour size and type of wine:

• If you pour 6 ounces per glass, the bottle yields about 4 glasses

• Fortified wines (like Port, Sherry) with higher alcohol content are served in smaller portions (around 2-3 ounces), resulting in 8-12 servings per bottle

• Sweet or dessert wines are also served in smaller glasses (2-3 ounces), increasing the number of servings per bottle

In summary:

• Standard wine bottle (750 ml) = about 5 glasses at 5 oz each.
• Larger pours reduce the number of glasses.
• Smaller pours for fortified or sweet wines increase the number of servings.

This standard is widely used in restaurants and for event planning to balance flavor, aroma, and alcohol consumption