Test cook Julia Collin Davison shows host Christopher Kimball how to make the ultimate Braised Halibut with Leeks and Mustard at home. Next, tasting expert Jack Bishop challenges Chris to a tasting of smoked salmon. Then, gadget guru Lisa McManus uncovers the best warming trays. Finally, test cook Bridget Lancaster reveals the secrets to making perfect Slow-Cooked Whole Carrots.