To make these mashed potatoes even more irresistible, you can enhance their flavor with a few additional touches:
Add Parmesan Cheese:
Mix in 1/4 to 1/2 cup of freshly grated Parmesan cheese with the mascarpone. The nutty and salty notes will add depth and complement the rosemary and garlic beautifully.
Roast the Garlic:
Instead of infusing the milk with raw garlic, roast a whole garlic bulb. Squeeze out the sweet, caramelized cloves and mash them directly into the potatoes.
Use Brown Butter:
Brown the butter before caramelizing the shallots. The nutty, toasted flavor of brown butter adds richness that pairs wonderfully with the mascarpone and rosemary.
Enhance with Truffle:
Add a drizzle of truffle oil or a sprinkle of truffle salt for a luxurious earthy note.
Fresh Lemon Zest:
Grate a small amount of fresh lemon zest into the mashed potatoes right before serving. This will brighten the dish and balance the richness.
These adjustments can be combined based on your taste preferences. For example, brown butter, roasted garlic, and Parmesan work together wonderfully for an ultra-luxurious side dish.