Mr. Submarine Sub Sauce

Recreate the iconic flavor of Mr. Submarine at home! The ultimate sub sauce, crafted to give your submarine sandwiches that signature tangy and savory kick. A harmonious blend of spices and seasonings, this sauce elevates every bite, making every sandwich an unforgettable culinary experience. Why settle for ordinary when you can have the legendary taste of this sub dressing in your own kitchen?

Copycat Mr. Submarine sub sauce in a small bowl and squeeze bottle and a sub sandwich.

Submarine Sauce

If you live north of the border, you are probably familiar with Mr. Sub! If not, you are about to take your sandwiches and salads to the next level with this Mr. Sub Secret Sauce recipe.

History of Mr. Submarine

Mr. Sub or Mr. Submarine as it was originally called, opened its doors back in 1968 in Toronto, Canada. It started small but has grown to over 200 shops.

Mr. Sub is known for its submarine sandwich featured on a long baguette-type roll. The sandwich is filled with meat, cheese, and veggies. The sub sauce is what put this sandwich on the map.

What Makes Mr. Sub Secret Sauce so Sood

It may be called Mr. Sub’s Secret Sauce but it’s not so secret thanks to one of my Canadian friends. What gives it a special flavor is the juice from jarred pepperoncini peppers.

Why You Should Try This Sub Sauce Recipe

This sauce tastes identical to Mr. Sub’s sauce, so now, when you crave it, you don’t need to go into the restaurant to get it! It has a rich base, thanks to the soybean and olive oil, and the garlic provides umami notes.

However, the star ingredient is definitely the hot pepper juice because it gives the sauce its signature flavor. The best part is that you don’t need a special blender to make it; just give the ingredients a shake, and you’re ready to use it.


Here’s what you will need to make this copycat sub dressing recipe:

  • Soybean Oil
  • Olive Oil
  • Hot Pepper Juice (from Pepperoncini)
  • Oregano
  • Garlic
Copycat Mr. Submarine sub sauce ingredients on a tray.

What is a Pepperoncini Pepper and How Hot is It?

Pepperoncini peppers are not that hot at all. The pepper hails from Italy and goes by many different names.  It actually looks a little like a banana pepper and can be found in most grocery stores. 

If you were to compare it to a jalapeno pepper on the pepper scale, a pepperoncini pepper is 5-80 times milder. The juice that comes from this pepper is perfect for this sub sauce.

Sub sandwich and copycat Mr. Submarine sub sauce in a squeeze bottle behind it.

How to Make Sub Sauce

There are only two simple steps to make this copycat recipe:

  1. Combine all the ingredients in a shaker or mason jar.
  2. Close the lid and shake it vigorously until the sauce is well combined.
Collage of making copycat Mr. Submarine sub sauce.

Recipe Tips

  • If you don’t have soybean oil, you can substitute canola oil or saffron oil for it.
  • A shaker is the best way to combine a salad dressing or sauce. But if you don’t have one, you can use a mason jar or anything else with a tight lid. You can also whisk it in a bowl.
Copycat Mr. Submarine sub sauce in a glass condiment bowl.

Other Delicious Ways to Serve This Sauce

You don’t have to limit this sauce to just homemade subs. Since it is similar to dressing but with a twist, you can use it in all sorts of creative ways.

I suggest using it on a salad to give it a zesty kick. The pepperoncini juice will give any salad a bright flavor. You can also use it on burgers, mix it into pasta salad, or drizzle it over bruschetta as a finishing touch.

What Side Dishes Can You Serve with a Sub Sandwich?

At Mr. Sub, there are plenty of sides you can pair with the sandwiches, such as baked cookies or brownies, pickle spears, or chips.

However, when you make it at home, you can always serve your sub with something else, like Dill Potato Salad or a fresh Cucumber Onion Salad. Lastly, you can’t go wrong serving the subs with your favorite soup!

How to Store Sub Sauce

Store this sauce in an airtight container to keep it as fresh as possible. It will last one to two weeks. You can store it in your pantry or the refrigerator. If storing it in the fridge, the oil may solidify so set it out on the counter about an hour before you want to use it.

If the mixture looks separated, don’t worry; that might naturally happen. You can simply shake it again to emulsify all of the ingredients together once more!

Copycat Mr. Submarine sub sauce in a small glass bowl and a sub sandwich behind it.

Mr. Sub does not have the only lock on unforgettable sauces, here are a few copycat sauces you simply must try!

Be sure to check out more of my easy sauce recipes and the best fast food copycat recipes.

What’s your favorite sandwich sauce? Let me know in the comments below.  And don’t forget to follow me on Facebook or Instagram or subscribe to my mailing list for the latest CopyKat recipes!

Copycat Mr. Submarine sub sauce in a small bowl and squeeze bottle and a sub sandwich.

Mr. Submarine Sub Sauce

Mr. Sub Secret Sauce is the perfect sauce for your sandwiches or salads and now you can make it at home!
5 from 6 votes
Print Pin Rate Add to Collection
Course: Sauces
Cuisine: American
Keyword: Mr. Sub Secret Sauce
Prep Time: 5 minutes
Total Time: 5 minutes
Servings: 50
Calories: 19kcal


  • 4 cups soybean oil
  • 1 cup olive oil
  • 1 1/2 cup juice from a jar of hot peppers (such as pepperoncini)
  • 1 teaspoon oregano
  • 1 teaspoon garlic


  • Combine all ingredients in a shaker and shake well.


  • If you don’t have soybean oil, you can substitute canola oil or saffron oil for it.
  • A shaker is the best way to combine a salad dressing or sauce. But if you don’t have one, you can use a mason jar or anything else with a tight lid.
  • Use Mr. Sub Secret Sauce on your favorite sandwich or for a salad.
  • Keep refrigerated in an air-tight container when not using.


Calories: 19kcal | Carbohydrates: 0g | Protein: 0g | Fat: 2g | Saturated Fat: 1g | Cholesterol: 0mg | Sodium: 0mg | Fiber: 0g | Sugar: 0g | Vitamin C: 0mg | Calcium: 1mg | Iron: 0mg

About Stephanie Manley

I recreate your favorite restaurant recipes, so you can prepare these dishes at home. I help you cook dinner, and serve up dishes you know your family will love. You can find most of the ingredients for all of the recipes in your local grocery store.

Stephanie is the author of's Dining Out in the Home, and's Dining Out in the Home 2.

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Reader Interactions


  1. David Linn

    Never Heard Of Mr Submarine. Mr Tony’s Was What I Remember And Was Was Very Good Sub I Miss That Place. Just Saying.

  2. Matt

    5 stars
    Didn’t have pickled pepperoncini’s on hand so I used pickled jalapeno juice and I also used vegetable oil instead of soya bean. Turned out as a very decent substitute.

  3. creativegenius

    This sub sauce rocked back in the day … long before Subway and the ‘also rans’ got in to the market.
    The Fat Albert’s chain in Ontario, Canada also had a very similar sauce that was very close to that of the Mr. Sub Sauce … I can taste it, just thinking about it.

  4. Melissa

    The trick I said to let the spices infuse with the oil overnight or at least 4hrs in the fridge! Thx for the recipe 🙂

  5. Cas

    i used about a tbsp of olive oil, tbsp pickled pepper juice, some dried, crushed oregano, and barely 1/4 tsp garlic powder and it was amazing 🙂

  6. WorldShaker

    I don’t know what Soya Oil is either.

    My family just used Vegetable Oil and it turned out fantastic.

    Great recipe, thanks Kat!

    • ZzyZzyXX

      This is what you’re looking for, soya Sauce is a different condiment.

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