Place 5 qt dutch oven or large pot over medium low heat and cover with enough olive oil to coat the bottom of the potOnce heated, add leek, carrot and garlic and sauté, stirring regularly, making sure not to brown the vegetables, for about 3-5 minutesAdd curry and cumin and toss to coat. Saute for an additional 1-2 minutes, until spices begin to toast and become aromatic.Add lentils, vegetable stock, 2 cups of water and saltRaise heat to high and bring to a boil before covering and lowering to simmer for about ½ hour until lentils are cooked but not too soft. Add water, as needed.Taste and adjust seasoning with salt and pepper