Do not conflate with A preference to avoid highly processed ingredients. Each restaurant page explains the evidence and what remains uncertain.
If you're reviewing Chick-fil-A for a soy allergy, you'll need to distinguish formal soy allergen statements from highly refined soybean oil. The standard Chicken Sandwich identifies soy, with soybean oil in the chicken and bun and soy lecithin in the bun. Chick-fil-A says the Waffle Fries recipe has no major allergen while also identifying highly refined soybean oil.
Chipotle's current allergen chart identifies soy in Sofritas, the tofu-based protein. Choosing another protein removes that identified component from your build, but it doesn't resolve possible contact from the Sofritas pan, serving utensil, gloves, or work surface. You'll have a clearer conversation if you name Sofritas and ask how the protein area is handled.
If you're reviewing McDonald's for a soy allergy, you'll need both the ingredient lists and the formal allergen statements. The Triple Cheeseburger page lists soy in American cheese and soybean oil in the bun. The Surf and Turf page lists soy in cheese, with soybean oil appearing in the bun, fish patty, and tartar sauce.
Soy at Starbucks isn't limited to choosing soymilk. The standard Nondairy Vanilla Sweet Cream Cold Brew lists soymilk, soy protein isolate, and soy lecithin, so a drink described as nondairy can still contain soy. Review the base drink, milk, syrup, sauce, cold foam, topping, and powder as separate parts of your order.
Soy at Taco Bell isn't limited to an ingredient named soy on the menu. The official allergen tool identifies soy for standard builds such as the Bean Burrito and Chicken Quesadilla, which combine tortillas, fillings, sauces, and cheese. Review the allergen result for your exact build component by component.