Corn syrup may be substituted for the maple syrup.
Puree peaches. Mix cornstarch with a little water. Combine all ingredients in large saucepan and heat to low boil, stirring occasionally. Continue to simmer 30 minutes, stirring frequently. Sauce may be thin, so at end of cooking time, if necessary, add sufficient water/cornstarch mixture to give sauce consistency of commercial barbecue sauce.