Combine cream and sugar/
maple syrup over medium heat, stirring with a wire whisk until sugar dissolves and mixture is smooth. Bring to a simmer, not a hard boil, for a minute or so, stirring constantly. Remove from heat. Mix yolks and
vanilla together well and
slowlypour it into the cream and sugar mixture while continuously whisking. Pour custard evenly into 4-6 individual size buttered baking dishes. Place dishes in a large pan in enough water to come up the sides of the dishes part way.