What this guide covers: Seed oil usage in Whataburger's fried menu, based on Whataburger's own ingredient documentation.
Whataburger fries its fries and other fried items in a soybean-oil-based shortening it brands "ZTF" (zero trans fat). The 100% beef patty is cooked on a flat-top rather than in that fryer, and Whataburger dresses its burgers with mustard by default, not mayo. A bunless burger is the way to order around it.
The cleanest order
Order this
A Whataburger or Double Meat with no bun, mustard, and the fresh toppings (lettuce, tomato, onion, pickle). The patty is 100% beef cooked on the flat-top, and mustard is Whataburger's default condiment.
Skip this
The fries, onion rings, and all fried chicken (ZTF shortening), the bun, the mayo, and the creamy dipping and salad dressings.
Ask for this
Your burger "no bun, mustard," which Whataburger does routinely. The patty plus mustard plus vegetables is the clean core of the order.
What can't be made clean
The fries. They are cooked in the ZTF soybean-oil shortening and Whataburger offers no alternative.
What "ZTF" means
Whataburger's own ingredient statement for its French fries reads: "Deep-fried in ZTF (zero trans fat) Whataburger liquid shortening." ZTF describes the shortening's trans-fat content (zero grams), not its oil source. The shortening itself is soybean oil-based.
Contains seed oil: per Whataburger's ingredient documentation
Fry oil: ZTF (zero trans fat) liquid shortening, soybean oil-based. Used across Whataburger's fried menu at most locations.
Why this matters beyond the fries
A shared fryer shortening means any item cooked alongside the fries (onion rings and other fried sides, where offered) carries the same seed-oil exposure, even if that item's own recipe doesn't separately list soybean oil.
Our Pick
Fatworks Pasture-Raised Beef Tallow
Beef tallow is a traditional animal fat with a high smoke point, historically used in commercial cooking before the widespread adoption of seed oils. For at-home cooking reference.
Frequently asked questions
Does Whataburger use seed oils?
Yes. Whataburger fries its French fries and other fried items in what it calls "ZTF (zero trans fat) Whataburger liquid shortening," a soybean oil-based shortening, per Whataburger's own ingredient documentation.
What does "ZTF" mean on Whataburger's menu?
ZTF stands for zero trans fat. It describes the shortening's trans-fat content, not the type of oil. The shortening itself is soybean oil-based, and soybean oil is a seed oil regardless of its trans-fat profile.
Is the same oil used for all of Whataburger's fried items?
The ZTF liquid shortening is used consistently across Whataburger's fried menu at most locations, per the chain's own documentation, though exact sourcing can vary by supplier or region.
Sources
- Frypedia -- Whataburger French Fries: Ingredients, Allergens & Dietary Verdict -- Quotes Whataburger's own ingredient statement for its French fries
What to keep at home instead
Whataburger fries and onion rings run through a canola or soybean blend, and the signature sauces are mayo-based. Tallow and an avocado-oil mayo rebuild the meal cleanly.
Best Cooking Fats to Replace Seed Oils: the full ranked list →