Heat the half-and-half in a small saucepan and add the sugar. Stir until the sugar is dissolved.
Remove from the heat and add the vanilla. Refrigerate until ice cold.
To make the snow cream, put 6 cups of snow in a large mixing bowl. Pour the cold sugar mixture over the snow and stir with a spatula until blended. Add another cup or two of snow if needed.
Serve immediately and freeze leftovers
Notes
Nutrition information is calculated using an ingredient database and should be considered an estimate. When multiple ingredient alternatives are given, the first listed is calculated for nutrition. Garnishes and optional ingredients are not included.