About Cook's Country from America's Test Kitchen Season 7, Episode 3 : Black and White Desserts

Test cook Julia Collin Davison uncovers the secrets to perfect Chocolate Angel Pie. Then, tasting expert Jack Bishop challenges host Christopher Kimball to a tasting of processed egg whites. Next, test cook Bridget Lancaster uncovers the secrets to making Black and White Cookies at home. And finally, equipment expert Adam Ried reveals his top picks for cookie sheets.