Cook the onion down a little, stirring frequently until softened and golden. Add the diced carrot, celery and potato and stir until well coated in the butter. Season lightly with salt and pepper.

Heat a large soup pot over medium heat. Saute the garlic and onion with a couple of tablespoons of water for about three ...

Add the onion and celery, if using ... Add any hard, raw vegetable pieces, such as carrot, parsnip, squash or potato and bring to a simmer. Cook for 5 minutes, stirring occasionally.