Peel the potatoes, cut them into chunks and cook in lightly salted water until tender. Drain well and return to the pot. Place the pot back on very low heat, shaking gently, to allow the potatoes to steam off completely.
Wash the rosemary sprigs, pat dry and shake off excess water. Strip the needles and finely chop them with a knife.
Heat the milk and add the rosemary. Transfer the potatoes into a bowl and mash with a potato masher, gradually adding the hot rosemary-infused milk.
Stir in the butter, season with salt and pepper to taste.
Serving suggestion: This creamy rosemary mash goes perfectly with pan-fried meat or poultry.
Notes
For a garlic twist, add peeled garlic cloves to the milk and simmer gently until soft. Mash the garlic into the potatoes along with the rosemary milk for a delicious garlic-rosemary mash.