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Description
Learn how to make deeply flavorful caramelized onions with a touch of balsamic vinegar. This simple recipe transforms ordinary onions into a sweet and savory delicacy perfect for various dishes.
Ingredients
- 2 large yellow onions, sliced 1/8-1/4 inch thick
- 2 Tablespoons extra-virgin olive oil (butter, ghee, or avocado oil also acceptable)
- 1 teaspoon sea salt
- 1 teaspoon granulated sugar (optional)
- Water, as needed
- Balsamic vinegar, a splash (optional)
Instructions
- Heat a 10-inch cast iron or stainless steel pan over medium-high heat.
- Add the sliced onions to the hot pan and cook, stirring a few times, for 5 minutes without oil.
- Add the olive oil, salt, and sugar (if using). Stir for a minute to incorporate. Reduce heat to medium-low.
- Stir every 5-10 minutes for 30 minutes, allowing the onions to caramelize on one side. Add water as needed to hydrate the onions and scrape browned bits (fond) from the bottom of the pan.
- After about 30 minutes, add a splash of balsamic vinegar (if using) and stir.
- Continue cooking for up to 45 minutes total until the onions reach a rich, caramel color.
Notes
- Scraping the browned bits from the bottom of the pan (fond) adds significant flavor.
- The sugar is optional but helps with caramelization.
- Adjust cooking time based on desired color and sweetness.