Place new potatoes in a large sauce pan with cold water and cover by 1 inch.

Bring to a boil, then reduce heat and gently simmer covered, for approximately 15 minutes, or until a knife inserted in the largest potato comes is easily pierced and slightly tender. Test a few potatoes if they are very different in size. Don't over-cook. (Time will vary depending on the size of the potatoes)

Remove from heat, drain water, then re-cover the pot and let the potatoes "dry out" a bit, covered for about 5 minutes.

Toss with butter until it's completely melted. Toss with fresh mint. Season with salt and pepper.