Peel and cut potatoes into 1-inch cubes, cover with cold water, add salt and bay leaves, and boil for about 20 minutes.

Heat butter in a skillet, add chopped shallots and garlic, sauté for 2-3 minutes, then add kale and steam for 5-7 minutes.

Drain potatoes, return to pot, add butter, milk, salt, pepper, and nutmeg, mash together and fold in the kale mixture.

Cook the smoked sausage as per your method until heated through, around 5-10 minutes.

Serve mashed potatoes and kale onto warm plates, top with sausage slices, and drizzle olive oil.