Smashburger Seed Oil Report Card
Based on our menu research, Smashburger cooks with: Fryers run soybean/canola blend (treated as soybean, high PUFA); burgers smashed in butter on the griddle, but Smash Sauce and truffle mayo are soybean-oil based.. Across the 102 menu items we analyzed, it averages 8.3g estimated PUFA per item, earning a seed-oil grade of C (High Risk).
Safest Orders at Smashburger
| 20 oz Fountain Drink | 0.0g PUFA |
| 30 oz Fountain Drink | 0.0g PUFA |
| Craft Refresher | 0.0g PUFA |
| Coke Bottle | 0.0g PUFA |
| Diet Coke Bottle | 0.0g PUFA |
What to Avoid at Smashburger
| Crispy Chicken Sandwich | 20.0g PUFA |
| Double Avocado Bacon Ranch Stack Chicken Smash | 16.0g PUFA |
| Double Green Goddess Bacon Stack Chicken Smash | 16.0g PUFA |
| Double Deluxe Chicken Smash | 15.0g PUFA |
| Double Scorchin Chicken Smash | 15.0g PUFA |
Frequently asked
Does Smashburger use seed oils?
Based on our menu research, Smashburger cooks with: Fryers run soybean/canola blend (treated as soybean, high PUFA); burgers smashed in butter on the griddle, but Smash Sauce and truffle mayo are soybean-oil based.. Across the 102 menu items we analyzed, it averages 8.3g estimated PUFA per item, earning a seed-oil grade of C (High Risk).
What oil does Smashburger cook with?
Our research indicates: Fryers run soybean/canola blend (treated as soybean, high PUFA); burgers smashed in butter on the griddle, but Smash Sauce and truffle mayo are soybean-oil based.. Preparation can vary by location, so treat PUFA numbers as estimates.
Does Smashburger use beef tallow?
No. Our research indicates Smashburger cooks with Fryers run soybean/canola blend (treated as soybean, high PUFA); burgers smashed in butter on the griddle, but Smash Sauce and truffle mayo are soybean-oil based., not beef tallow. For chains that fry in tallow or other real fats, see Tallow Watch.
Is Smashburger seed oil free?
No. Our research indicates Smashburger cooks with Fryers run soybean/canola blend (treated as soybean, high PUFA); burgers smashed in butter on the griddle, but Smash Sauce and truffle mayo are soybean-oil based., which includes seed oils. See the lower-PUFA orders above for the cleanest picks.
What is the safest thing to order at Smashburger?
20 oz Fountain Drink is the lowest-PUFA item we analyzed at Smashburger, at an estimated 0.0g PUFA. See the Safest Orders list on this page for more options.
What should I avoid at Smashburger?
Crispy Chicken Sandwich is the highest-PUFA item we analyzed at Smashburger, at an estimated 20.0g PUFA. Fried items and creamy, mayo-based sauces are usually the heaviest.
What are seed oils?
Seed oils — canola, soybean, sunflower, corn, and similar vegetable oils — are extracted from seeds using high heat and chemical solvents. They are very high in polyunsaturated fats (PUFAs), which are unstable at cooking temperatures and can oxidize easily. Many health-conscious eaters choose to minimize seed oils and prefer foods cooked in beef tallow, butter, coconut oil, or olive oil instead. This page shows estimated PUFA grams per menu item to help you make more informed choices. These are estimates — actual values vary by preparation and location. Curious why people avoid them? Read the evidence.
Compare other chains
McDonald's · Burger King · Wendy's · Five Guys · In-N-Out · Whataburger
See where Smashburger lands on the full Seed Oil Index, or check which chains cook in real fats on Tallow Watch.