Answer: No, but raspberries, blackberries and strawberries are infested and should not be used without a valid hechsher.
Reason: Berries do not need a hechsher. Raspberries, blackberries and strawberries, however, are infested and should not be used without a valid hechsher.
Source:
- OK: plain frozen fruits or vegetables with no added ingredients may be used without certification, if there are no insect concerns.
- cRc: frozen fruit with only fruit, sugar, ascorbic, malic or citric acid needs no certification (not from Israel or China), but non-organic frozen raspberries, blackberries and mulberries can only be used if pureed; cRc does not recommend frozen strawberries, even with hashgacha, unless the certification states they are bug-free (any brand may be used pureed).
Related questions:
- Do frozen edamame beans need a hechsher? No, if not processed.
More from Rabbi Tahan: Q&A: Kashrut of Frozen Berries
References: OK, Consumer FAQ · cRc (askcrc.org), “Fruits, frozen or canned” · cRc (askcrc.org), “Strawberries, frozen”
