Mr. Sub Secret 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.

Mr Sub's Secret Sauce and a sub sandwich

History of Mr. Submarine

Mr. Sub or Mr. Submarine as it was originally called,  opened it’s 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.  But it’s Mr. Sub Secret Sauce is what put this sandwich on the map.

What makes Mr. Sub Secret Sauce so good

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 special flavor is the juice from jarred pepperoncini peppers.

Ingredients

Here’s what you will need:

  • Soybean Oil
  • Olive Oil
  • Hot Pepper Juice (from Pepperoncini)
  • Oregano
  • Garlic
ingredients needed to make sub sauce

How to Make Sub Sauce

Combine all the ingredients in a shaker and shake well.

Use the sauce on subs, sandwiches, or as a dressing for salads.

What is a Pepperoncini Pepper and how hot is it

Pepperoncini peppers are actually 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.  But the juice that comes from this pepper is perfect for this secret sauce.

Cooking 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.
  • Use Mr. Sub Secret Sauce on your favorite sandwich or for a salad dressing.
  • Keep refrigerated in an air-tight container when not using.
sub sauce and a sub sandwich

Other Popular Sauce Recipes

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

Popular Fast Food Sandwiches

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!

Mr Sub's Secret Sauce and a sub sandwich

Mr. Sub Secret Sauce

Mr. Sub Secret Sauce is the perfect sauce for your sandwiches or salads and now you can make it at home!
5 from 1 vote
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Course: Sauces
Cuisine: American
Keyword: Mr. Sub Secret Sauce
Servings: 50
Calories: 19kcal

Ingredients

  • 4 cup soybean oil
  • 1 cup olive oil
  • 1 1/2 cup hot pepper juice like from pepperoncini
  • 1 teaspoon oregano
  • 1 teaspoon garlic

Instructions

  • Combine all ingredients in a shaker and shake well.

Recipe Tips for the Cook

  • 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.

Nutrition

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
Tried this recipe?Mention @CopyKatRecipes or tag #CopyKatRecipes!

About Stephanie

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 CopyKat.com's Dining Out in the Home, and CopyKat.com's Dining Out in the Home 2.

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Reader Interactions

Comments

  1. 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 🙂

  2. 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 🙂

  3. 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!

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