The cooking time for sweet potatoes depends on the size of the potato and your desired level of doneness. As a general rule, you can boil sweet potatoes for 15-20 minutes until they are tender enough to be mashed.
To cook sweet potatoes for mash, follow these steps:
Peel and cut the sweet potatoes into small chunks.
Place the chunks in a pot and cover with cold water.
Bring the water to a boil over high heat, then reduce the heat to medium-low.
Simmer the sweet potatoes for 15-20 minutes or until they are tender when pierced with a fork.
Drain the sweet potatoes and return them to the pot.
Mash the sweet potatoes using a potato masher or fork.
Add any desired seasonings, such as butter, salt, pepper, or cinnamon.
Remember that cooking times can vary depending on the size and freshness of the sweet potatoes, so be sure to check for tenderness periodically while boiling.