Scrub potatoes. Wash beans; remove ends. Break the beans into 2-inch pieces.
Cut a 1/4-inch slice from one end of ham; dice the slice. Cut remaining ham into 1-inch slices; quarter slices.
In a Dutch oven, cook the diced ham in olive oil over medium heat for 1 to 2 minutes or until it begins to brown. Add green beans and cook for 4 minutes. Remove from heat.
Add potatoes and ham slices. Pour water over all. Bring to boiling; reduce heat and simmer, covered, for 25 minutes or until potatoes are tender. Drain.
Prepare the Horseradish Sauce; serve with the meat and vegetables. Makes 8 servings.
In a small bowl, combine dairy sour cream and prepared horseradish.