2 Tbsp olive oil
1 clove garlic, sliced into thick rounds
3 waxy red or yellow potatoes, peeled and broken into chunks (see note above)
4 leeks, washed and sliced into 1" rounds
4 large (or 6 small) carrots, peeled and sliced into 1/2" rounds
water to cover
salt to taste
Heat the olive oil in a large heavy soup pot over medium heat. Add the garlic and potatoes, and saute for a few minuts. Add the leeks and carrots, and saute for another minute. Add water to cover by 1", and a bit of salt. Bring to a boil, then reduce the heat to a simmer. Simmer, covered for about 2 hours (or, ideally, longer), stirring occasionally. Season to taste with additional salt.