Test cook Lan Lam shows Julia Collin Davison how to build a showstopping Ice Cream Cake. And science expert Dan Souza reveals the unexpected powers of melting ice.

Test Cook Ben Mims prepares Pan-Seared Halibut with Wilted Bitter Salad for host Bridget Lancaster. Tasting Expert Jack Bishop challenges Bridget and host Julia Collin Davison to a tasting of frozen puff pastries. And Test Cook Erica Turner makes Julia buttery semolina cookies, Ma'amoul.