Just to add to the info, I turn my surplus tomatoes into plain sauce and then can it. Then I use the plain sauce to make any other tomato-based sauce I want (homemade ketchup, tomato soup, Italian red sauce, etc.). Sometimes I scald the tomatoes and pull their skins off before I cook them down, then dry the skins in the dehydrator and pulverize them into powder in a mortar and pestle. The tomato skins contain concentrated tomato flavor and you can use it as a seasoning. Tomato powder is one of the main ingredients in barbecue potato chip dust (often along with brown sugar, onion and garlic powder, smoked paprika, cayenne pepper, salt, and citric acid or vinegar powder for tang) so you can use it to make homemade barbecue potato chips.