2 cups dark corn syrup
1/3 cup dark brown sugar
1/2 cup water
1 cup pecan pieces
1/2 teaspoon vanilla extract
Combine syrup, sugar and water in a saucepan over medium heat. Bring to a boil; boil for 1 minute.
Remove from heat; stir in pecans and vanilla extract. Pour into hot jars, leaving 1/4 inch head space. Adjust caps. Process 10 minutes in a boiling water bath.
Makes about 4 pints.
NOTE: If you are going to use the syrup in a fairly short period of time, make half a batch and keep in the refrigerator.