Test cook Julia Collin Davison demonstrates how to make the ultimate Black Bean Burgers at home. Next, tasting expert Jack Bishop conducts a tasting of vegetable broth. Then, test cook Becky Hays demonstrates how to make the freshest Super Greens Soup with Lemon-Tarragon Cream. Finally, test cook Dan Souza reveals the secrets to making Homemade Vegetable Broth.