Mash the unpeeled potatoes with a fork or masher and stir all the ingredients together. The cream can certainly be replaced with milk or even broth. The consistency of the dough should be almost runny.
Let the dough rest a little and then bake individually in the waffle iron - for me level 4 of 6.
I served it with a carrot salad and creme sour.
The batter is enough for 8 waffles, of which 3 people will be full, or two of us and the next day you can still nibble a little.