Even in the freezing weather there is enough edible treasure around if you know where to look.
In a pot add water, the potatoes (chopped), leek (sliced), onion, and salt. Bring to boil and let simmer until cooked.
Add the ingredients to a blender, adding the broth bit by bit calculating the amount needed for the desired velvety texture. If it’s too thick add more water.
Add the black pepper, stir and enjoy.
Turn the soup into the main course, adding roasted vegetables or bits of meat. You could add mushrooms, fried in butter till their edges turned gold, sausages, croutons, bit sof bacon…