Can you use this in an air fryer?

Yes, I use it all the time for chicken and it is great. It comes out crispy, flavorful and not greasy. I use my hyped air fryer all the time and its all good.

Can I add some beer to it to make beer battered fish?

I just added one cup of this, and 1/4 teaspoon of baking powder and some beer, and stirred it up to make a nice batter, not too thick not too thin, I deep fried it for just under 5 mins, I washappy with it, but it turned out a little dark brown, and the cod wasn't very flaky as I get when I get it in the restaurant. This is my first time ever making beer battered fish, I think I need to make a few modifications, if anyone has some advice for me I would greatly appreciate it. I used a bag of frozen cod fillets, and didn't defrost them maybe that was what I did wrong, or maybe I need a different cut of cod or something, I am happy with this, but just need some advice to adjust what I am doing, if anyone has a perfect set of steps they use to make beer battered fish please let me know, Thank you. I am giving this product a five star rating because of its ease of use, now if only I can get my cooking skills up to that level.

Can you keep Zatarans fish fry mix in freezer?

I would not suggest in it's original container. Try something airtight, as moisture may cause clumping and dampness. That is a better chance to keep it loose and dry.

IS THIS ITEM GLUTEN FREE

Zatarain's Fish Fri does not contain gluten. Gluten and gluten products, when present, will always be declared on the product label by the common name of the gluten source such as “barley”, “wheat”, “rye”, “oats” or “triticale”. If no ingredient statement appears on the product label, then the product is as it appears in the product name (e.g. black pepper). It is important that you read the ingredient statement on your package at the time of purchase to ensure accurate, up to date information, as product formulas may change. If any product has a Gluten-Free claim, the product and the manufacturing line has been validated Gluten-Free. McCormick takes the safety and quality of our products very seriously and you can be certain that we exercise the utmost care in the production and packaging of our products. Our employees are trained in the importance of correct labeling and the necessity of performing thorough equipment clean-up and change over procedures to minimize cross-contact of ingredients. ~ Erica