How long can you keep open half/half?
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It can safely keep in the refrigerator three to four days. You can also freeze half and half up to four months, but the texture changes ...
In my experience open half & half lasts longer than milk - maybe two weeks.
When in doubt, you could taste a bit. A sample of spoiled dairy will taste/smell disgusting but not poison you.
It's easy, peasy.
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