Why is this being downvoted? A balanced plate may be easier to wash. Starch absorbs fat, some acidic liquid will keep the fat and starch from sticking too much. Get your plate to the dish washer, rinse, and without need none to little soap will get rid of all the residues. The fat is already stuck to other particles so won't need much soap. What's the point of teaching Chemistry if the kitchen always looks like a cumbersome time-consuming mess to most people.