Combine the first four ingredients in a saucepan over med. Heat. Stir occasionally, until the mixture comes to a full boil. Let it boil for 7 min. Turn the heat off and let the syrup cool for 15 min. Add the maple flavoring and stir. When completely cool, transfer the syrup to a covered plastic or glass container. Variation: For syrup with a butter flavor, just add 3 tbsp. Of butter to the mixture before heating. For a lighter syrup, use a sugar substitute instead of the regular sugar.