Mix all in sauce pan to boiling, lower heat to simmer. Prepare sweet potatoes per Ball Blue Book. Cleaned, peeled, cut in chunks, rinsed and blanch for 3-5 minutes. Placed in prepared jars, add syrup to 1 inch head space, cleaned rims, placed lids and rings. Pressure can 65 minutes for pints at 10 lbs of pressure for weighted gauge and 11lbs for dial gauge. Adjust for altitude. Syrup was perfect amount for 6 pints.