Put the leeks cut into rings with oil in the bowl, fry: 3 min. 100° speed 1.
Add the potatoes cut into thin slices, the water until everything is covered and the thermomix nut, cook: 25 min. 100° speed 1.
Then blend everything together: 30 sec. speed 6. If it is too thick, add some water and continue cooking: 5 min. 100° speed 1.
Drizzle with a drizzle of oil and, if desired, serve with croutons of bread or with a sprinkling of grated Parmesan... Bon Appetit!