Here's my submission making potato-leek-nettle soup. Aside from those ingredients it also included a carrot or two, a stick of celery, garlic, butter, tallow, and ground sausage.
I melt butter and tallow and add chopped carrots, leeks, and celery. Cook a bit and then add the sausage. Chop potatoes and nettles and add. Add water to cover and cook until potatoes are done. Add garlic and puree with immersion blender. Salt and season to taste.
Simple and satisfying.
