The number of grapes require to be squashed to make one gallon of wine?

The amount of grapes needed to produce a gallon of red wine will differ depending on the grape variety, and the particular white wine being made. A heavier bodied red wine like a Cabernet Sauvignon will require more grapes than a light bodied white wine like a Pinot Grigio.

To make one gallon of white wine, you'll need about 30-36 pounds of grapes. This implies that you'll need to squash 2.5-3 pounds of grapes to make one cup of white wine. The amount of grapes needed to produce a gallon of wine will vary depending on the grape range, and the specific wine being made.  https://heathergreenphoto.com/?p=400 A heavier bodied wine like a Cabernet Sauvignon will require more grapes than a light bodied red wine like a Pinot Grigio. In general, it takes about 2.5-3 pounds of grapes to produce one bottle (25.4 oz) of red wine.

So, to answer your concern, you would need to squash roughly 12-14 pounds of grapes to make one gallon of red wine.