It was probably the overall fat content; and sometimes just the act of eating. Gravy and ham are both high fat. Did you make the potatoes with milk, cream, and/or butter?Unless/until you find something to control the D on a regular, ongoing basis, you will probably do better to limit your intakes. (Try nf sour cream or yogurt or soya yogurt on your potatoes. There are a number of quite good soya meat and cheese substitutes.) Unfortunately, what I found was that as I would eliminate one food, another would become the "new" trigger.Mark