this post was submitted on 27 Mar 2026
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The vegetable oils are saturated fats, which will mix with the peanut oil, but solidify at room temperature. That and the sugar are doing the leg work on keeping the peanut butter from separating. So yeah, saturated fats and sugar are unhealthy additives specifically for preserving the peanut butter. What exactly is your definition of a preservative?
Preservative refers to a substance that inhibits spoilage, decay, discoloration or other drops in quality.
It's one way to increase shelf life.
A stabilizer isn't a preservative because oil separation doesn't impact quality, shelf life or anything like that.
Peanuts already have saturated fat, the vegetable oils are better on that than the peanuts.