Remove the outer leaves from the sugar loaf. Now quarter the lettuce, remove the stalk and cut finely. Then wash and drain well. Then roast the walnuts in a pan without fat.
Now it comes to the salad dressing. To do this, squeeze the mandarins and lemon and place in a container. Add the sea salt, pepper, the finely diced onions and the oils.
Finally, dress the salad with it and serve. Garnish with the roasted walnuts.