Test cook Bridget Lancaster uncovers the secrets to making zeppoles at home. Then, equipment expert Adam Ried reveals his top picks for splatter screens. Next, test cook Ashley Moore shares the steps for the best slow-cooker chicken stock. Then, tasting expert Jack Bishop challenges host Christopher Kimball to a tasting of shredded parmesan. And finally, test cook Julia Collin Davison shows host Christopher Kimball how to make the ultimate pasta with mushroom sauce.