Cut the top and bottom of the roast beef in a net shape and fry it in a pan in oil. Place the meat on a baking sheet and pour the gravy from the pan over it and cook at 160 ° C. The meat is perfect when it is still slightly pink on the inside.

Mix all the ingredients for the aioli and let it steep overnight.

Clean the lettuce and place in a bowl. Also clean the mushrooms, cut into slices and add to the salad. Mix with oil, vinegar, salt and pepper (or any other dressing if you like).

Now cut the bread into even slices and place a slice of roast beef on top of each bread. Arrange the salad next to it and serve the aioli with it.