What oil does Port of Subs fry in?
Port of Subs cooks with olive oil.
In detail: The oil-and-vinegar dressing on every classic sub is pomace olive oil (ingredient statement on the chain's own nutrition portal, July 2026: refined olive pomace oil, extra virgin olive oil, red wine vinegar). Soybean oil is the base of the mayonnaise, ranch, Caesar and honey mustard, and the bread is made with interesterified and hydrogenated soybean-oil shortening. Nothing is fried.
Ordering at Port of Subs? Build your meal in the app and see its seed oil total before you pay.
Build my orderPort of Subs at a glance
| Fry oil (US) | Olive oil |
| Seed oils | Not in the fryer |
| Beef tallow | No |
| Peanut oil | No |
| Seed oil grade | B (5.4 g average per item, 246 items) |
| Is it a seed oil? | Olive oil: No |
The 5 cleanest things to order at Port of 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 |
|---|---|
| Spinach Salad | 0.1g |
| Garden Salad | 0.2g |
| Caesar Salad | 0.6g |
| Chef Salad | 0.7g |
| #7 Roast Beef Provolone Sub (5" Small) | 0.7g |
Lower PUFA is cleaner. These are estimates from published nutrition data and disclosed oils; preparation varies by location.
Build your Port of Subs order
Pick your meal, sides, sauces and drink in the app and see your seed oil total before you order. It logs to your day in one tap. Free on iPhone and Android.
Build my orderWhy 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 Port of Subs report card, or where it lands on the Seed Oil Index. See which chains fry in real fats on Tallow Watch.
Frequently asked
What oil does Port of Subs fry in?
Port of Subs cooks with olive oil. In detail: The oil-and-vinegar dressing on every classic sub is pomace olive oil (ingredient statement on the chain's own nutrition portal, July 2026: refined olive pomace oil, extra virgin olive oil, red wine vinegar). Soybean oil is the base of the mayonnaise, ranch, Caesar and honey mustard, and the bread is made with interesterified and hydrogenated soybean-oil shortening. Nothing is fried.
Does Port of Subs use seed oils?
Not in the fryer: Port of Subs cooks with olive oil. Some other items still contain seed oils, so check the grams for each one.
Does Port of Subs use beef tallow?
No. Port of Subs cooks with olive oil, not beef tallow.
Does Port of Subs use peanut oil?
Not that we can find. Port of Subs cooks with olive oil. If you have a peanut allergy, ask the restaurant directly, because oils and suppliers can vary by location.
What is the lowest seed oil order at Port of Subs?
Spinach Salad (0.1 g of polyunsaturated fat). Next: Garden Salad (0.2 g) and Caesar Salad (0.6 g).
Which Port of Subs item has the most seed oil?
#17 Tuna Sub (24" X-Large), at about 37.0 g of polyunsaturated fat as listed.