Did you or can you consider the freezer? Might get better long term storage results. Just remember that if it is not covered in the freezer, say it is ice trays the water will sublimate off and it will work towards syrup or beyond. Lightest clearest syrup you will ever have because it will gain no more color in this frigid long slow sublimation process.
If you think it's easy to make good money in maple syrup .... then your obviously good at stealing somebody's Maple Syrup.
Favorite Tree: Sugar Maple
Most Hated Animal: Sap Sucker
Most Loved Animal: Devon Rex Cat
Favorite Kingpin: Bruce Bascom
40 Sugar Maple Taps ... 23 in CT and 17 in NY .... 29 on gravity tubing and 11 on 5G buckets ... 2019 Totals 508 gallons of sap, 7 boils, 11.4 gallons of syrup.
1 Girlfriend that gives away all my syrup to her friends.