What oil does Firehouse Subs fry in?
Firehouse Subs cooks with Subs are mostly steamed meat/cheese/bread (2-6g PUFA); soybean-oil mayo and ranch add 4-6g, and bagged chips are the highest-PUFA side..
The 5 cleanest things to order at Firehouse Subs
Learn this once: a salad with grilled protein and the dressing left off is nearly always the lowest seed oil order anywhere. So the list below sticks to real meals, salads included, never just a water.
| Item | PUFA |
|---|---|
| Firehouse Chili | 2.0g |
| Deluxe Mac & Cheese | 2.0g |
| Loaded Potato Soup (Cup) | 2.0g |
| Hook & Ladder (Small) | 4.0g |
| Hook & Ladder Sub (medium) | 5.0g |
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 Firehouse Subs report card, or where it lands on the Seed Oil Index.
Frequently asked
Does Firehouse Subs use beef tallow?
No. Firehouse Subs cooks with Subs are mostly steamed meat/cheese/bread (2-6g PUFA); soybean-oil mayo and ranch add 4-6g, and bagged chips are the highest-PUFA side., not beef tallow. See which chains fry in real fats on Tallow Watch.