What oil does Yoshinoya fry in?
Yoshinoya cooks with Soybean oil for frying (TFC, gyoza, tempura); beef tallow naturally present in gyudon beef items; soy-based sauces throughout.
BMedium Risk — 5.7g avg PUFA/item across 82 items
The 5 cleanest things to order at Yoshinoya
| Soft Drink (Medium) | 0.0g PUFA |
| Iced Tea | 0.0g PUFA |
| Bottled Water | 0.0g PUFA |
| Yoshi Punch | 0.0g PUFA |
| Fountain Drink | 0.0g PUFA |
Lower PUFA is cleaner. These are estimates from published nutrition data and disclosed oils; preparation varies by location.
Why the frying oil matters
Most fast-food chains fry in seed oils like soybean, canola, corn, or a blend of them, which are high in polyunsaturated fat (PUFA). A handful still use beef tallow or other stable fats, which are far lower in PUFA. The oil a kitchen fries in is the single biggest driver of how much seed oil ends up on your plate. See the full breakdown on the Yoshinoya report card, or where it lands on the Seed Oil Index.