How long does peanut butter last after being open?

Answer 1

After you open the airtight seal, you refrigerate it. This slows down the mold buildup and reduces the amount of aflatoxin produced over time. Of course, it's not as easy to spread onto your bread that way. But it does reduce the cancer risk.

Statistically, just as a rule of thumb, two tablespoons of peanut butter a day produce a higher risk of death than living next to a nuclear power plant. A lot higher, if you eat peanut butter made from peanuts that sit around on the shelves for weeks at a time, or from opened jars of peanut butter that sit around unrefrigerated for weeks at a time.

This is just one of many areas where the words "natural" and "organic" do not necessarily translate to "fewer toxins" or "more healthy." Of course, put it in perspective: there are other things we do every day that are a lot more dangerous than eating a peanut butter sandwich. But to understand that, you have to get serious-minded, and start taking statistical analysis of risk factors seriously. Alas, most people refuse to do that sort of thing.

Answer 2

Depends on the size of the family, and how well they like peanut
butter. Don't last long around here.