Overview: Test cook Julia Collin Davison uncovers the secrets to making the best Grilled Steak with New Mexican Chile Rub. Then, tasting expert Jack Bishop challenges host Christopher Kimball to a tasting of hot sauces. Next, test cook Becky Hays shows Chris how to make perfect Raspberry Sorbet at home, and science expert Guy Crosby explains the science behind great sorbet. And finally, gadget guru Lisa McManus reveals her favorite ice cream machine and cone maker.