Grappa Vs Brandy: Which Drink Has The Higher Alcohol Percentage? - Tasting Table
Briefly

Brandy and grappa, commonly viewed as distinct spirits, actually share comparable alcohol content, with brandy ranging from 40% to 50% ABV and grappa from 40% to 45%. The perception of grappa being stronger may arise from the glassware it is served in, which is typically smaller and holds less liquid. In contrast, brandy is enjoyed in larger snifters. Both spirits are served in similar alcoholic volumes that align with their comparable strength. Additionally, brandy is more broadly defined, being distilled from various fermented fruit juices, creating numerous varieties based on the fruit used.
Brandy and grappa actually have roughly the same alcohol content. Brandy's ABV tends to range from 40% to 50%; grappa's from 40% to 45%. The differences between glassware used for serving cocktails and spirits may contribute to the misconception that grappa is stronger.
Grappa is served in cordial glasses, with a typical capacity of about four ounces, though only about an ounce is served at a time. Brandy's snifter glasses have a capacity of eight to 12 ounces - which is obviously a bigger vessel, but one you'd still only serve about one or two ounces in at a time.
Despite the difference in glassware sizes, brandy and grappa are served in about the same amount for about the same alcohol content.
Brandy is a broader category. It's distilled from fermented fruit juice. There are different types of brandy depending on that base fruit, and these varieties can get very specific depending on where they're made.
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