To celebrate the 25th anniversary of the most-watched cooking show on public television, the cast of America's Test Kitchen is hosting a party! In "America's Test Kitchen Celebrates 25 Years," hosts Bridget Lancaster and Julia Collin Davison and the test cooks highlight the food, science, kitchen ingenuity, and fun that have made the show a fan favorite for over 600 episodes and bring viewers behind-the-scenes to see how it all gets made.