CURRY UDON NOODLE SOUP WITH RIBEYE – Sometimes Good Wife

Ingredients

• 2 tablespoons vegetable oil
• 1 each small yellow onion, julienned
• ¼ lb. beef sliced ribeye
• 4 cups chicken stock, preferably homemade (recipe follows for homemade basic chicken stock)
• 1.4 ounces Japanese curry roux (basically 2 pieces/cubes/blocks)
• 2 packages frozen udon noodles (about 8.8 ounces per package)