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Peanut Butter Containing Fish

Q: I bought peanut butter and saw that next to the certification logo there is an “F”. Does that mean “fleishig” or “fish” or something else? Please advise.

A: The “F” refers to “fish”. As a rule, a fish designation means that you cannot eat that food with meat, but in this case it is not true. That hashgachah labels the peanut butter as “fish” because it contains a tiny bit of fish oil in it and they hold fish ingredients cannot be batel. [They do the same for orange juice, bread and some other items.] However, Rav Schwartz has said that fish can be batel b’shishim (and other hashgachos take a similar stance), and therefore we would say that it can be used with meat in spite of the fish ingredient.