This week, Pierre Thiam will change the way you cook with his secrets for mafé (peanut sauce), Senegalese barbecue and his favorite ingredient, fonio. Plus, journalist Jen Doll helps explain a puzzling new trend of dinner party hosts charging their friends; Adam Gopnik and Christopher Kimball reveal their favorite food books of 2023; and we make Pasta Rotolo with Spinach and Ricotta.