Low Carb Marinated Onions

Transform your everyday meals with the bold, tangy zest of Low Carb Marinated Onions—a keto-friendly twist on a classic condiment! This quick and easy recipe features thinly sliced red onions steeped in a flavorful marinade of apple cider vinegar, granulated erythritol, and warm spices like black peppercorns and bay leaf. With just 15 minutes of prep and zero cooking time, these crisp, sweet-and-sour onions are the perfect low-carb topping for salads, burgers, tacos, or grilled meats. Plus, they store beautifully in the fridge, making them a make-ahead gem for busy weeknights. Bursting with flavor and simplicity, these marinated onions are a must-have for any low-carb kitchen!

Nutriscore Rating: 71/100

Prep Time:15 mins

Cook Time:0 mins

Total Time:15 mins

Servings: 8

Ingredients

• 2 medium Red onions
• 1 cup Apple cider vinegar
• 1 cup Water
• 2 tablespoons Granulated erythritol
• 1 teaspoon Sea salt
• 1 teaspoon Whole black peppercorns
• 1 whole Bay leaf
• 2 whole Garlic cloves

Directions

Step 1

Peel the red onions and slice them into thin rings or half moons, depending on your preference.

Step 2

In a medium saucepan, combine the apple cider vinegar, water, granulated erythritol, and sea salt.

Step 3

Smash the garlic cloves lightly with the side of a knife and add them to the saucepan.

Step 4

Add the whole black peppercorns and bay leaf to the saucepan.

Step 5

Place the saucepan over medium heat and bring the mixture to a gentle simmer, stirring occasionally to dissolve the erythritol and salt.

Step 6

Remove the saucepan from heat once the liquid starts simmering and all ingredients are well combined.

Step 7

Allow the liquid to cool slightly for about 5 minutes.

Step 8

Place the sliced onions in a clean glass jar or container with a tight-fitting lid.

Step 9

Carefully pour the warm marinade over the onions, ensuring they are fully submerged.

Step 10

Let the marinated onions cool to room temperature, then seal the jar and refrigerate for at least 4 hours, preferably overnight, to allow the flavors to meld.

Step 11

Enjoy as a tangy, low-carb topping on your favorite dishes.

Nutrition Facts

Serving size	(817.5g)

Amount per serving	% Daily Value*
Calories	190.7

Total Fat 0.5g	0%
Saturated Fat 0.0g	0%
Polyunsaturated Fat 0g
Cholesterol 0mg	0%
Sodium 2356.9mg	0%
Total Carbohydrate 59.5g	0%
Dietary Fiber 6.6g	0%
Total Sugars 17.8g
Protein 4.1g	0%

Vitamin D 0IU	0%
Calcium 123.3mg	0%
Iron 1.4mg	0%
Potassium 672.7mg	0%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 1.7%

Protein: 6.3%

Carbs: 91.9%