Ingredients
- 1 tablespoon olive oil
- 1 large onion chopped into 1/2-inch pieces
- 1 large carrot chopped into 1/2-inch pieces
- 1 large celery rib chopped into 1/2-inch pieces
Instructions
- Heat the olive oil in a large pan over medium-low heat.

- Add the chopped vegetables and stir frequently for about 10 minutes until the onions become translucent and the vegetables soften. Take care that they do not brown.

