Lean mayonnaise at home with flour and lemon

Mix flour and water gently so that there are no lumps. Put on fire and cook until thickened. Then you need to cool the resulting mass. Then add sugar and salt. beat everything with a blender (but you can also use a whisk, although it will take more time). Add oil in small portions. without stopping whipping. Then add lemon juice. beat everything up again and you can use it. This mayonnaise is well suited for salads and for baking. It can be stored in the refrigerator for several days.