Peel and slice your potatoes and chop your onions. Put the vegetable in a pot.
Cover the vegetables with at least twice the volume of milk. I like just a bit more milk.
Heat the soup but do not let it boil. Turn down the heat and stir while cooking until the vegetables are done. Add salt and pepper to taste. It takes a little more than you would think. Add the pepper to taste. I like a lot but be careful or you soup will be very hot. That's all there is too it. Yummy.