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

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

To make one gallon of white wine, you'll require about 30-36 pounds of grapes. This implies that you'll require to crush 2.5-3 pounds of grapes to make one cup of white wine. The quantity of grapes required to produce a gallon of white wine will vary depending upon the grape variety, and the specific white wine being made.  https://scarabnet.org/?p=691 For example, a much heavier bodied white wine like a Cabernet Sauvignon will need more grapes than a light bodied wine like a Pinot Grigio. In basic, it takes about 2.5-3 pounds of grapes to produce one bottle (25.4 oz) of white wine.

So, to answer your concern, you would require to crush around 12-14 pounds of grapes to make one gallon of white wine.