Amy Cullen stood smiling behind a display table set with samples and trays of tasting cups. “Did you want to try some of the oils?” she asked a woman shopping at Kimberton Whole Foods in Downingtown.

Muhammara, the Arabic word for a spread made with roasted red peppers and walnuts, translates as "something that is red," writes Reem Assil in her very good new book, "Arabiyya: Recipes from the Life ...