Most people store peanut butter in the pantry, but proper storage varies by type. Natural peanut butter, such as Kirkland Signature, should always be refrigerated after opening to maintain its freshness and prevent oil separation. Processed varieties like Jif can remain in the pantry. According to the National Peanut Board, opened peanut butter should be refrigerated after three months to avoid rancidity. Natural peanut butter can last longer when stored in the fridge, up to one year unopened, and should be consumed within three to four months once opened.
Natural peanut butter, unlike processed varieties, should ideally be stored in the fridge to prevent oil separation and ensure lasting freshness.
Jif and similar processed peanut butters can safely reside in the pantry, but natural options like Kirkland's require refrigeration right after purchase.
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