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I'm making a hot dog sauce that contains tomatoes, bacon & soy sauce. I've tried to preserve it with vinegar, but lost the taste of the product. What can I use to preserve the sauce in a glass container and how long could I store it in a refrigerator?

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When preserving food, safety is of top importance, so I would not recommend experimenting haphazardly with sealed jars and preservatives. Generally, cooked leftovers can be kept in the fridge for 3 to 4 days with no special treatment. If you need to keep your sauce for longer than that, we need to do something else.

Pressure canning cooked meat is feasible; however, it uses specialized equipment. It also requires some exactitude to do safely. Unless you are interested in diving into the rabbit hole of canning, I do not think this technique would be convenient.

Using acid to preserve your sauce is a bad idea. Although vinegar or another acid can prevent microbial growth (for example, in a jar of pickles) any significant quantity will make your sauce too sour as you already observed.

Freezing is probably your best bet, both from a food safety and a convenience perspective. Put the sauce in a plastic container, or even better a plastic bag. It can be safely frozen for weeks or months. When ready to use, there are multiple ways to safely defrost the sauce. But the easiest is just to reheat from frozen, either on the stove or in the microwave.

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  • Given that the meat involved is bacon, does the possibility of it being shelf-stable (some bacon is) change this answer in any way? – Onyz Jun 19 at 16:20
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    @Onyz even without the meat altogether I would still recommend freezing. In particular, shelf-stable bacon is protected by its high level of salt and low level of moisture. But the final sauce is going to be less salty and have higher water content. – Benjamin Kuykendall Jun 19 at 18:44

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