Rinshin, are you searching the entire Library/Recipes? (I can only search the Library/Recipes as I don't have your Bookshelf, so I can't replicate your search exactly if it's just in your Bookshelf.) When you say you put "fish in the filter", do you mean you typed "fish" into the search box, or that you selected Ingredient > Fish & seafood in the Filter By sidebar? In the entire Library/Recipes, I get the same result of 6 recipes when I enter "air fryer" into the search box and Filter By: Ingredient > Fish & seafood, no matter which order I enter/select those two criteria. Here's the search in the Library/Recipes: https://www.eatyourbooks...amp;f_ingredient_group=2
Remember that the search box is looking first for exact matches in recipe titles...which is the only way you can search for "air fryer" recipes as we don't have that specific appliance category. As you pointed out, it's not presently included under the Browse > Cooking Styles list, although it's something we've considered adding. (The Browse > Cooking methods you listed in your second post are Book-level categories, some of which are also available in Recipe indexing -- e.g., Children & baby food, Cooking ahead, Quick/easy -- but most of them can only be applied to Books/Magazines/Blogs in the EYB Library.)