Mash potatoes… funny business really. Some people like them lumpy, some with skins on, some with herbs, some with mustard. I have seen pureed mash that looks more like cream. I guess to each their own.
I use a technique that produces perfect mash everytime for me, not too runny, never lumpy and the ultimate in comfort food.
When I was a child, my mother would make me a mountain of creamy mash potatoes and empty the contents of a soft-boiled egg over it. Eat it and weep!