What this guide covers: Seed oil usage across Subway's sauces, meats, and bread, based on Subway's US Product Ingredient Guide (January 2026), the most recent version published at the time of research.
Subway's official ingredient guide names soybean oil as the lead ingredient in its Regular Mayonnaise and in most of its signature sauces. Two meats are browned or seared in soybean oil. Fresh vegetables carry no listed oil at all.
Sauces: mostly soybean oil
Per Subway's US Product Ingredient Guide, Regular Mayonnaise is: "Soybean oil, eggs, water, distilled vinegar, contains less than 2% of salt, sugar, spice, lemon juice concentrate, calcium disodium EDTA added to protect flavor." Soybean oil is the first-listed ingredient.
Baja Chipotle Sauce, Peppercorn Ranch Sauce, and Sriracha Sauce all name soybean oil as an early ingredient in the same guide. The MVP Parmesan Vinaigrette lists soybean oil first, with a smaller amount of olive oil later in the ingredient line.
The Olive Oil Blend is the one dressing option positioned as an olive-oil product, but the guide's own ingredient line reads "Canola oil, extra virgin olive oil": canola oil (a seed oil) is named alongside the olive oil, without a stated ratio.
No added oil listed: per Subway's ingredient guide
✓ = no oil ingredient listed for this item. Doesn't rule out shared-surface cross-contact.
- ✓Lettuce Fresh iceberg variety. No oil listed.
- ✓Tomatoes Red tomatoes. No oil listed.
- ✓Cucumbers Plain cucumber. No oil listed.
- ✓Red onions No oil listed.
- ✓Spinach Fresh baby spinach. No oil listed.
- ✓Sliced avocado Hass avocados only. No oil listed.
Contains seed oil: per Subway's ingredient guide
Regular Mayonnaise, Baja Chipotle Sauce, Peppercorn Ranch Sauce, Sriracha Sauce, and MVP Parmesan Vinaigrette all name soybean oil. Olive Oil Blend names canola oil alongside extra virgin olive oil.
Meats: two items browned or seared in seed oil
The Oven Roasted Turkey Breast ingredient line ends: "Browned in Soybean Oil and/or Vegetable Oil." The Rotisserie-Style Chicken line ends: "Seared in Soybean Oil and/or Sunflower Oil." Both soybean and sunflower oil are seed oils. The guide does not specify which of the "and/or" options is used at a given time.
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.
Bread: palm oil, not seed oil, in most loaves
Subway's Artisan Italian bread lists palm oil, not a seed oil, among its ingredients. The Stuffing bread (used on some limited-time items) is the exception: its ingredient line names sunflower oil directly, plus a "canola and/or sunflower oil" blend used as a glaze/preservative carrier.
Frequently asked questions
Does Subway use seed oils?
Yes. Subway's official US Product Ingredient Guide (January 2026) lists soybean oil as the first ingredient in Regular Mayonnaise, and as a primary ingredient in most of their signature sauces (Baja Chipotle Sauce, Peppercorn Ranch Sauce, Sriracha Sauce, and MVP Parmesan Vinaigrette). Soybean oil is a seed oil.
What oil is in Subway's Olive Oil Blend?
Subway's Olive Oil Blend is canola oil and extra virgin olive oil, per their official ingredient guide. It is not a pure olive oil product; canola oil (a seed oil) is the blend's other named ingredient, and the guide doesn't specify the ratio.
Are Subway's meats cooked in seed oil?
Some are. The Oven Roasted Turkey Breast is "browned in Soybean Oil and/or Vegetable Oil" per the official ingredient guide. The Rotisserie-Style Chicken is "seared in Soybean Oil and/or Sunflower Oil." Both soybean and sunflower oil are seed oils.
Which Subway ingredients have no oil listed?
Fresh vegetables have no oil ingredient on Subway's official list: lettuce, tomatoes, cucumbers, green peppers, red onions, spinach, and sliced avocado. This reflects the published ingredient guide only and doesn't rule out shared-surface cross-contact.
Where can I find Subway's official ingredient list?
Subway publishes a US Product Ingredient Guide, updated periodically (the version cited in this guide is dated January 2026), available through subway.com. Formulations can change between updates; verify directly for the most current version.
Sources
- Subway -- US Product Ingredient Guide (January 2026) -- Primary source for all sauce, meat, bread, and produce ingredient lines cited on this page
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