Keep in mind that some produce items are harvested only once a year, like pumpkins, or apples, so you should put up a full year's worth when you are preserving. Other foods, such as greens, or broccoli, can be grown in the early spring and again in the fall, so you'll only need to put up a few months' worth at a time.
When you are calculating how much you will use, don't forget that even though you may not serve tomato juice three times per week, you could easily use those servings each week when making soups, stews, roasts, and even bread. I always try to put up several times more juice, applesauce, and salsa than I think we could ever eat, because all too often I reach for those items when cooking and baking.
There are lots of helpful tools out there to help you determine how much of which foods to preserve. There are people who are glad to share with you their family's annual food needs, or you can make you own chart, as I do. Here are the category headings in my chart, and how I use them:
Food
List the food to be calculated.
Serving Size
List the average serving size per family member. Some suggestions: juice, 1 cup per serving; vegetables, ½ cup per serving; jelly, 1/8 cup per serving, etc.
Servings Per Meal
If the average size is, say, ½ cup, as it would be with many vegetables, and you have teenage
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