Does peanut butter need refrigeration?

Online Answer
An open jar of peanut butter stays fresh up to three months in the pantry. After that, it's recommended to store the peanut butter in the fridge (where it can maintain its quality for another 3-4 months). If you don't refrigerate, oil separation can occur. Here's a run-down..
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Eating a lot of it, though, promotes artery-clogging atherosclerosis, the process that underlies most cardiovascular disease. In contrast, unsaturated fats, which make up the majority of the fat content in peanut butter, help reduce LDL cholesterol and lower the risk of heart disease.
The peanut butter may be contaminated with salmonella, bacteria that cause food poisoning. Suspect jars bear a number on the lid beginning with the digits "2111.
Studies show that most people with peanut allergy can safely eat this kind of peanut oil. If you are allergic to peanuts, ask your doctor whether you should avoid peanut oil. But avoid cold-pressed, expelled or extruded peanut oil—sometimes called gourmet oils..
Benefits. Peanut butter is a heart-healthy food. It's rich in vitamins and minerals. It's also high in fiber, which promotes good digestion..
Combining incomplete proteins to form a complete protein Combinations include: Nuts or seeds with whole grains (peanut butter on whole wheat toast) Whole grains with beans (beans and rice.