Throw anything you want in the pot and boil it. Literally this.

Briefly sautée the onions and garlic and then add the potatoes. Stir briefly and then add water, carrots. When the carrots and potatoes are almost cooked add the chopped Frankfurters/Bockwurst. Add black pepper, white pepper and then salt to taste. Garnish with some spring/green onions. That’s it.