If you are using leftovers, the potatoes, cabbage carrots, and corned beef are already cooked you will place the chicken stock into a 4 qt pot and whisk in the flour, bring it to a boil and add leftovers, and heat them thoroughly.

If you are beginning with your items uncooked, cook carrot, then add cabbage as it only takes a few minutes, cook your potatoes in the microwave then dice them and add them in, along with the stock mixed with flour, bring to a boil. Add cooked corned beef, I prefer it shredded in this soup. Heat thoroughly.