By weight, a grape berry is about 75% pulp.
Answer: True.
A grape berry is made up of 75% pulp, 20% skin, and 5% seeds (there are usually two to five of them). Pulp is the soft, juicy center of the grape, and is what will become the wine. It’s the sugar in the pulp that is crucial to winemaking, since it’s the sugar that will be converted to alcohol.