Whisk eggs, yolks, sweetener and salt together in a large saucepan. Slowly whisk in almond milk until well combined. Using a candy thermometer, cook mixture over low heat while stirring constantly, until it becomes thick enough to coat the back of a spoon and registers 165F (this can take up to 15 minutes).

Stir in 2 tsp vanilla and nutmeg. Cover tightly with plastic wrap and chill for at least three hours and up to 2 days.

Just before serving, whip cream with powdered sweetener and remaining vanilla into soft peaks and gently fold into the egg mixture. Add 1 oz liquor or liqueur to each glass and pour eggnog over. Stir gently and sprinkle with grated nutmeg.