- ¾ cup diced and seeded cucumber
- ¾ cup diced green bell pepper
- ¼ cup diced white onion
- ½ cup apple cider vinegar
- 2 tablespoons cane sugar
- ¾ teaspoon mustard seeds
- ¾ teaspoon sea salt
- ¼ teaspoon red pepper flakes
- ⅛ teaspoon celery seed
- In a small pot, combine the cucumber, bell pepper, onion, and ¼ cup of the apple cider vinegar. Bring to a simmer and cook for 10 minutes, stirring occasionally. Drain and discard any excess liquid.
- Return the veggies to the pot and add the remaining ¼ cup apple cider vinegar, the sugar, mustard seeds, salt, red pepper flakes, and celery seed. Simmer for 5 minutes.
- Remove the relish from the heat and let cool to room temperature. Chill until ready to use.
