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We keep opened tomato based sauces in jars for a couple of weeks. We don't eat a lot of pasta or tomato sauce, so it's rare that we'd eat a whole jar in a week. Since it's mostly veggies and olive oil, not meat or milk, I've never worried about spoilage. We've done this for years and never gotten sick. After all, think how long ketchup stays in the fridge after you open it. I've never actually read the directions on a tomato sauce jar, maybe I should.
Editing--just read the Prego tomato sauce label, it said use within 14 days of opening. So I'm good. Maybe your brand has milk or meat. You didn't store it in the can, did you?
We keep opened tomato based sauces in jars for a couple of weeks. We don't eat a lot of pasta or tomato sauce, so it's rare that we'd eat a whole jar in a week. Since it's mostly veggies and olive oil, not meat or milk, I've never worried about spoilage. We've done this for years and never gotten sick. After all, think how long ketchup stays in the fridge after you open it. I've never actually read the directions on a tomato sauce jar, maybe I should.
But. ketchup has vinegar in it. I've noticed not V-8 but another canned vegetable juice I buy now (much cheaper than V-8) seems to be getting bad in a tightly closed container in a week or so. Though I add lemon juice to it. Makes it hard to tell as it is a acid taste it gets. Still not sure ,,,might be my imagination. Though the bottle will release pressure at times..
Reusing same plastic jug for a period of time might contribute though I wash it thoroughly.
I usually freeze what I don't use. I can get a jar of sauce and it will make 3 containers. I just take one out when I need it.
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