3 potato beet hash eggs greens Recipes

extra-virgin olive oil, divided, chopped onion, cubed peeled yukon gold potato (about 3/4 lb), cubed peeled sweet potato (about 3/4 lb), chopped fresh sage, divided, garlic cloves, minced, cubed peeled cooked beets (about 1/2 lb), salt, divided, black pepper, divided, red wine vinegar, divided, eggs, dijon mustard, torn frisee or curly endive

russet potatoes , potatoes (baking, about 1 lb), onion , cut into 3/4-inch pieces, garlic clove, minced, unsalted butter, green bell pepper, chopped coarse, all-purpose flour, beef broth, bottled beet horseradish, worcestershire sauce, cooked corned beef, cut into 3/4-inch cubes (from a 3- to 4-lb corned beef brisket)