Can I use a turkey roaster to keep mashed potatoes warm?

Yes, a turkey roaster is a great way to keep mashed potatoes warm! Set the roaster to a low temperature, around 180-200°F (80-90°C), and keep the lid on to retain moisture. You can also add a small amount of butter or cream to the mashed potatoes to prevent them from drying out. Just stir them occasionally to maintain the right consistency.