As the level of sap in the pan reduces through evaporation, add more sap.A large shallow pan with high sides is preferred.Fill the evaporating container with sap.How to boil sapīoil sap outdoors or in a well-ventilated area so large amounts of steam can escape. When there’s enough concentrated sap, the pan is finished-off to produce the correct density syrup. The evaporation pan is filled with sap and more sap is added as necessary to replace what’s lost by evaporation. In such operations, the evaporation pan is arranged so sap can be continuously added and drawn off. Sap may also be concentrated using a reverse osmosis (RO) machine before final evaporation. Large commercial operations use a continuous feed evaporation process. Heat allows maple syrup to develop the characteristic color and flavor that make it so desirable. The process of making maple syrup is a matter of boiling the sap so it concentrates into a sugar solution of a predetermined level. To produce standard-density syrup, you’ll need less sap when sugar concentration is above 2 percent and more sap when it’s below 2 percent. At that concentration, you would need 43 gallons of sap to produce 1 gallon of syrup.īut, the amount of sap needed to produce a gallon of maple syrup varies depending on its initial sugar concentration. Sap has an average sugar concentration of 2 percent. If the sap gets warm before boiling, you may get a darker, off-flavor, poor-quality syrup. If you have low temperatures and favorable storage conditions, you can keep sap one to two days with little reduction in syrup quality. During prolonged flow periods when this is not an option, collect sap at least every two to three days or more often, if required. When to collect and boil sapĬollect and boil down sap as soon as possible for high-quality syrup. The flow period may range from a few hours to a day or more. Normally, a single taphole produces between 1 quart and 1 gallon of sap per flow period, accumulating 10 to 12 gallons in a season. So the amount of sap produced varies from day to day. It flows when there’s a rapid warming trend in early to midmorning, following a night when the temperature gets below freezing. Sap doesn’t flow from maple trees every day of the tapping season.
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