What are the differences between arrowroot and cornstarch, and how can they be used interchangeably in cooking and baking?

Arrowroot and cornstarch are both thickeners used in cooking and baking, but they have some differences. Arrowroot is derived from a tropical plant, while cornstarch comes from corn. Arrowroot is a better choice for acidic dishes, as it doesn't break down as easily as cornstarch. However, they can generally be used interchangeably in most recipes that call for a thickening agent. Just keep in mind that arrowroot thickens at a lower temperature than cornstarch, so adjust cooking times accordingly.