Description
A perfect homemade replica of Subway’s iconic Sweet Onion Sauce that combines sweetness with tangy flavor and subtle onion notes. This versatile condiment elevates sandwiches, salads, and wraps with its signature taste that fans of the popular sandwich chain will instantly recognize.
Ingredients
Scale
- Main Ingredients
- 1 Cup Sugar
- 1/2 Cup Water
- 6 Tablespoons White Vinegar
- 1 1/2 Tablespoons Red Wine Vinegar
- 1/2 Tablespoon Onion, freshly grated
- 1 Tablespoon Cornstarch
- 2 Teaspoons Dijon Mustard
- 2 Teaspoons Mustard Powder
- Seasonings
- 1 Teaspoon Poppy Seeds
- 1/2 Teaspoon Sesame Oil
- 1/2 Teaspoon Onion Powder
- 1/2 Teaspoon Salt
- 1/4 Teaspoon Garlic Powder
- 1/4 Teaspoon Celery Seed
- 1/4 Teaspoon Paprika
- 1/4 Teaspoon Black Pepper
Instructions
- Combine Ingredients: Add all ingredients to a sauce pan. Make sure to measure everything precisely as the balance of flavors is key to achieving that authentic Subway taste. The combination of fresh grated onion with onion powder provides layers of onion flavor, while the cornstarch will help thicken the sauce to the perfect consistency.
- Cook the Sauce: Bring to a boil while whisking constantly. Let boil for 5 minutes, then reduce heat to simmer for another 5 minutes, whisking continuously. This constant whisking is crucial to prevent the sugar from burning and the cornstarch from clumping. The sauce will gradually thicken as it cooks, changing from a thin liquid to a syrupy consistency.
- Cool and Store: Remove from heat and allow to cool completely. The sauce will continue to thicken slightly as it cools. Once at room temperature, transfer to an airtight container and store in the refrigerator for up to 1 week. The flavors will actually develop and meld together more after a day in the refrigerator.
Notes
- For best results, allow the sauce to chill overnight before using to let the flavors fully develop.
- This sauce is excellent on sandwiches but also works as a marinade for chicken or as a dipping sauce for vegetables.
- If the sauce becomes too thick after refrigeration, simply stir in a teaspoon of water to thin it out.
- You can adjust the sweetness by reducing the sugar to 3/4 cup if you prefer a less sweet version.
- For a smoother sauce, blend the mixture after cooking and cooling.
- Prep Time: 5 minutes
- Cook Time: 10 minutes
- Category: Sauces-condiments
- Method: Stovetop
- Cuisine: American
Nutrition
- Serving Size: 1 tablespoon
- Calories: 40
- Sugar: 8g
- Sodium: 25mg
- Fat: 0g
- Saturated Fat: 0g
- Unsaturated Fat: 0g
- Trans Fat: 0g
- Carbohydrates: 10g
- Fiber: 0g
- Protein: 0g
- Cholesterol: 0mg