How much sugar to 3 gallons of figs?

The amount of sugar to add to 3 gallons of figs largely depends on your taste preference and the intended use (e.g., jam, preserves, or fresh consumption). A common guideline for making fig preserves is to use about 1 to 1.5 cups of sugar for every quart of figs. Since there are 12 quarts in 3 gallons, you might consider using approximately 12 to 18 cups of sugar, adjusting based on the sweetness of the figs and your personal taste.