In a medium bowl, whisk together the egg yolks and Maine maple syrup.
Heat the milk and cream in a saucepan over medium heat until hot, but not boiling. Whisk into the egg yolk mixture. Remove from heat. Strain through a sieve into a glass jar and store in the refrigerator.
Return the mixture to the saucepan and cook over low heat, stirring constantly until thick. The mixture will coat a spoon.
Remove from heat. Strain through a sieve into a glass jar and store in the refrigerator.
Makes about 1 ½ cups sauce.
Nutritional analysis per 1 ounce (2 tablespoons) of sauce: 66 calories, 1 gram protein, 4 grams carbohydrates, 5 grams fat, 11 mg. sodium, less than 1 gram fiber