Cube your potatoes into roughly two-inch pieces—uniform size means they cook at the same rate instead of some turning to mush while others stay firm. I learned this the hard way when half my batch turned to soup. Place them in cold salted water and bring to a rolling boil, then simmer for 12-15 minutes until a fork slides through without resistance.

While potatoes cook, heat olive oil in a small skillet over low heat and add your sliced garlic cloves. Let them warm for about three minutes—you're not frying them, you're infusing the oil so the garlic flavor spreads evenly through your creamy mashed potatoes Thanksgiving crowd instead of sitting in chunks. The oil should smell like a French bistro, not burnt garlic powder.

Drain potatoes in a colander and let them sit for exactly two minutes so excess moisture evaporates. This step separates home cooks from people who end up with watery results. If you skip it, all that work gets undone when you fold in the dairy.

Return warm potatoes to the pot and add butter plus your garlic-infused oil immediately. Mash by hand for about one minute, breaking them down roughly but not completely—you want a few small lumps remaining because they'll dissolve as you fold in the cream. This is where the magic happens because the heat makes the butter and oil bond with the starch.

Heat your milk and heavy cream together in a separate small saucepan for about two minutes, then add half of it to your potatoes while mashing gently. Add the remaining cream slowly, tasting as you go, because every potato batch absorbs liquid differently. I've been making this for three years and I still add cream gradually instead of dumping it all at once—nobody likes gluey results.

Fold in sea salt, black pepper, and nutmeg, stirring just enough to combine without deflating the texture. Nutmeg is controversial but trust me because it adds warmth that people can't quite identify but absolutely notice. Taste and adjust seasoning—this is your last chance before guests arrive.

Transfer to a serving dish and top with grated Parmesan and fresh chives right before serving so they stay sharp and visible. If you're making this ahead, reheat gently and add the cheese and chives fresh, never microwaving them into the mix.

Finish with a pinch of smoked paprika across the top for color and subtle depth that rounds out the buttery richness.