Yes, Jiffy Peanut Butter can be refrigerated, but it is not necessary to do so. Peanut butter is a shelf-stable product and can be safely stored at room temperature for an extended period.
The main reason people might choose to refrigerate peanut butter is to prevent the oil from separating and rising to the top. Refrigeration can slow down this process and keep the peanut butter more homogenous. However, some people prefer the creamier texture that refrigeration can produce, while others find it harder to spread when cold.
If you do choose to refrigerate Jiffy Peanut Butter or any other peanut butter brand, make sure to keep it tightly sealed in its original container or transfer it to an airtight container to prevent absorption of any odors from the refrigerator.
Remember that if you decide to refrigerate the peanut butter and it becomes too firm, you can leave it at room temperature for a short time before use to make it easier to spread. Alternatively, if you prefer a smoother texture without refrigeration, you can simply stir the oil back into the peanut butter when you first open the jar, and then store it at room temperature.