Test cook Bridget Lancaster shows host Christopher Kimball how to make Green Chile Cheeseburgers at home. Then, tasting expert Jack Bishop challenges Chris to a tasting of mayonnaise. Next, Chris shares the test kitchen’s top tips on making your own ... (more)burger. And finally, test cook Erin McMurrer uncovers the secrets to making the best Five-Alarm Chili. Recipes: Green Chile Cheeseburgers, Five-Alarm Chili Taste Tests: Mayonnaise