Smoked Sausage and Cabbage Soup | Food Stuff

Ingredients

• 2 cups diced carrot
• 2 cups diced celery
• 3 quarts chicken broth
• 3 ounces all-purpose flour
• 2 tablespoons chopped garlic
• 1/4 cup grapeseed oil
• 1 small head green cabbage, shredded
• 1 pound Polish kielbasa, diced
• Kosher salt and black pepper
• 6 tablespoons unsalted butter
• 1/4 cup whole-grain mustard
• 2 cups diced yellow onion