Great Jones Dutch Baby 3.5-Quart Dutch Oven in Royal Blue. Dutch Baby is a round 3.5-quart cast-iron Dutch oven that nests neatly inside The Dutchess (sold separately). It’s been customized for smaller batches and kitchens- perfect if you frequently cook for one or two people.. In Blueberry- Royal blue. Enameled cast-iron. Made in China. Induction safe. Measures approx 9 W x 9 H x 6 D. GJON-WA2. CW-DTB-BL-01.