Rich, velvety, and deeply comforting, this homemade eggnog puts the store-bought cartons to shame. Gently cooking the custard base creates a luxuriously thick texture while keeping the eggs perfectly safe to drink. A warming blend of dark rum and cognac cuts through the sweetness, and folding in freshly whipped cream right before serving gives it a beautifully frothy finish. It's a holiday classic you'll want to sip by the fire all season long.