Test cook Julia Collin Davison shows host Christopher Kimball how to make a Moroccan-style Chicken Tagine at home with foolproof Couscous that's better than any store-bought brand. Then, gadget guru Lisa McManus reveals her pick for the best compost bucket. Later, test cook Bryan Roof uncovers the secrets to making your own preserved lemons. And finally, equipment expert Adam Ried reviews steamer baskets in the Equipment Corner.