This sweet-tangy-savory sauce is adapted from a recipe in Put 'Em Up by Sherri Brooks Vinton, one of my favorite books for food preservation ideas. This recipe is suitable for canning (or freezing if you like).
To easily peel either peaches or tomatoes, dunk them in boiling water for 30 seconds or so then transfer to ice water. Once they are cool enough to handle,
To speed up your simmering time, one trick is to use frozen fruit and/or tomatoes - let them thaw and drain off the excess liquid before making the recipe.
3 lbs peaches, pitted and sliced (peeling optional)
3 lbs paste tomatoes, cored, peeled, and seeded
1 3/4 cup cider vinegar
2/3 cup soy sauce
6 cloves garlic, coarsely chopped
1/2 cup grated or minced ginger root, or more to taste
1 3/4 cup brown sugar
3 star anise, tied up in cheesecloth or a tea bag
Combine all ingredients in a large pot and let simmer for an hour or so. Remove the start anise and puree the rest. If the consistency is good, can, freeze or refrigerate the result. If still too thin, continue to simmer until it reaches desired consistency (remembering that it will be thicker once cool than it is when hot).
To can, process using the hot water method. Process pint jars for 10 minutes or half-pint jars for 5 minutes.
Makes about 2 1/2 pints.