Wash the potatoes, but do not peel them.
Place them in a pan, pour boiling water over them, salt and a sprig of mint.
Cover and cook for 20-25 minutes, or until cooked through but still firm.
Drain the potatoes.
Add the butter, chopped mint and chives, and shake the pan to get each potato well covered with the butter and herbs.
Season with freshly ground pepper.