There is no single potato for chicken stew, as the choice will depend largely on your personal preferences and what you have available. Some good potato options for both chicken stew and beef stew include Yukon gold potatoes, red skin potatoes, fingerling potatoes, or new potatoes. You can also use waxy potatoes, such as baby potatoes or petite yellow potatoes. You could even use sweet potatoes. No matter which type of potato you choose, be sure to cut them into bite-sized pieces for the best results in your Instant Pot chicken stew.