SLOAN, Robin. Sourdough. 272p. Farrar. Sept. 2017. Tr $$26.95. ISBN 9780374203108.

Like Sloan’s debut, Mr. Penumbra’s 24-Hour Bookstore, this novel twists new and old worlds together. General Dexterity, a robotics company in San Francisco, burns out its bright young employees on 12-hour shifts and feeds them a gray sludge called Slurry. Enter Lois Clary, the company’s new software engineer, fresh from Michigan, whose social life is at an all-time low. Alone each night, she cheers up when Beo, the takeout guy, delivers delicious, spicy soup from Clement Street Soup and Sourdough. He’s nicknamed her “number one customer!” for her loyalty. But Beo and his brother, the cook, are in a hurry to leave the country, and one evening they deliver more than her order—they give her the family’s starter for their sourdough bread and urge her to carry on their tradition. Lois enters the competitive foodie world of hip San Francisco with a recipe from long ago and the means to change her life. She also gets some help from the women of the Lois Club, who offer comic relief and some sage advice. Laced with clever pop culture references, this humorous, richly plotted novel features unforgettable characters and imparts an important lesson: you can’t succeed in the modern world without respecting the old one. VERDICT  Highly recommended for all YA collections.–Georgia Christgau, Middle College High School, Long Island City, NY This review was published in the School Library Journal March 2018 issue.