Snert is a soup brought to the Americas by Dutch pioneers in the late 1600's. It is made of split green peas and (originally) sow belly, celeriac, celery, leek, union and carrot were added. At the end of the cooking process (approx. 2 hours) a sliced smoked pork sausage is added.
Snert is a heavy winter dish that grew popular over time in the USA under the name: "Split Pea Soup". There are many variations but the link below (Dutchpeasoup) refers to the original Dutch recipe.