Overview: Test cook Julia Collin Davison shows host Christopher Kimball how to make Tex-Mex Cheese Enchiladas at home. Next, tasting expert Jack Bishop challenges Chris to a tasting of corn tortillas. Then, equipment expert Adam Ried reveals his top picks for tortilla keepers. And finally, test cook Erin McMurrer uncovers the secrets to making perfect Huevos Rancheros.