I have been contacting some restaurants lately and I am posting a few of the responses.
Thank you for patronizing Frisch's Big Boy Restaurants. In response to your questions regarding your daughter's peanut allergy, our restaurants do not use peanut oil.
If you have any further questions, please feel free to contact me at (513) 559-5128. My office hours are Monday through Friday 9 am until 5 pm.
FRISCH'S RESTAURANTS, INC.
Mike Cigolotti Marketing Dept.
By KevinP on Dec 22, 2013
Sara, I just visited Frish's and was informed that the Onion rings batter and breading both contain peanut oil. They are then fried with everything that is fried in their facility. Your answer from the Frish's pr is misleading. This would mean the oil is contaminated and you could have a reaction from things like French fries.