Web Extra: The Art of Maple Sugaring
Mar 06, 2015 12:38PM ● Published by Erica Shames
One method of boiling your maple sap outdoors to make maple syrup.
Heat source: A small pit is dug, using bricks to secure the walls of the pit. Metal bars are secured over the fire to support the pot. A fire is built in the pit with dried, split wood. As it will take several hours to boil your sap into syrup, a sufficient wood supply is required.
Other options include an outdoor grill, the kitchen stove (for small batches), an indoor wood stove, or even an outdoor fryer (like the ones used to deep fry a turkey). If boiling indoors, keep in mind that this process will generate a lot of steam.
Boiling the sap: Fill a flat pan or large pot (a "lobster" pot is used in this example) ¾ full with sap. Place the pot onto the heat source. Once the sap starts to boil down to ¼ - ½ the depth of the pot, add more sap, but try to maintain the boil. If the sap is boiling over the edges of the pot, a drop of vegetable oil or butter wiped onto the edge of the pot will reduce this.
Transfer to smaller pot: The boiling sap will take on a golden color. Once the sap has “mostly” boiled down, but still has a very fluid texture, it is time to transfer the sap into a smaller pot. The outdoor heat source should be fully extinguished at this point.
Complete the boiling: Once transferred to the smaller pot, the final boiling can be completed indoors. Continue to boil the sap until it takes on a consistency of syrup. One way to check for this is to dip a spoon into the sap / syrup - syrup will “stick” to the spoon as it runs off. It is important to watch the boiling sap very closely as it approaches syrup, since it is more likely to boil over at this point. If you have a candy thermometer, finish the boil when the temperature is 7 degrees F above the boiling point of water. Note that the boiling point of water differs based on your elevation.
Filtering the syrup: A small amount of sediment will be present in your syrup. This can be filtered out of your sap using a food grade filter. A coffee filter is suitable to filter a small amount of sap at a time. After letting the syrup cool, pour a small amount into a coffee filter, collect the top ends of the filter into a bunch, and press the syrup through the filter into a clean container (such as a measuring cup). Depending upon how much syrup is produced, this will need to be repeated several times (using a new filter each time). For larger batches, a wool or orlon filter can be used. You can also remove the sediment by allowing the syrup to stand overnight in the refrigerator, letting the sediment settle to the bottom.
Bottle your syrup: Sterilize a bottle and cap (or multiple bottles and caps depending upon how much syrup you have produced) in boiling water. Pour the sediment free syrup into the bottle, cap, and refrigerate.
Your refrigerated syrup should be used within 2 months. Syrup can also be frozen (in a freezer safe container) to extend shelf life.
When the temperature remains above freezing or buds start to form on the tree, it is time to stop collecting sap.
Susquehanna Life Magazine has not tested this boiling method and disclaims any responsibility for the outcome of its preparation.