Purple Mashed Potatoes

I'm addicted to the show "Chopped." So I'll share a very simple but cool looking recipe.

Mashed Purple Sweet Potatoes

You'll need:
2 or more purple sweet potatoes
About 1/3 cup milk, or more to taste
About 1/3 cup sour cream, or more to taste
About 2 tblsp butter, or more to taste

Set a pot of water to boil.

Peel the sweet potatoes.

Add the sweet potatoes to the pot and boil until tender. This took about 20 minutes for me, but times may vary for you. The water  turns black

Mash.

Added about 2 tblsp butter, 1/2 cup milk, and 1/2 cup sour cream. Adjust to taste.

Looks awesome!!!!!!!!!!