While we were up in the Berkshires, we went to visit Gould Farm to see their maple sugar operation. My in-laws recently met a man named Steve who oversees the maple sugaring there. Gould farm is a pretty amazing place. It is a residential, therapeutic community dedicated to helping adults with mental illness. You can read more about them here.
The evaporator that we saw is powered by a wood fire. From the enormous woodpile behind the sugar shack, it was clear that a lot of wood is needed for the process.
The sap is poured into the far end of the evaporator and works its way through channels. What you can’t see, is that the underside of these channels are shaped a bit like an accordion, so a very large surface area gets heated by the fire. The tree sap ranges from about 2% to 5% sugar and when it’s finished it’s about 67% sugar. We were treated to maple tea, which is the sap that has cooked for quite a bit, but is still in the back half of the evaporator. It is sweet, but still thin like tea. As an extra treat, Steve brought fresh cream from their cows to add to it, which made it taste like ice cream.
There are various ways to know when the maple syrup is finished. You can use a hydrometer, a candy thermometer (it’s ready at about 7 degrees F above the temp of boiling water), or you can do a visual check. The syrup sheets off the ladle in a manner similar to making jam. It is something you can do at home, but we were warned that with the amount of steam that is produced, many homes have lost their wallpaper during the process.
The final syrup was temporarily put in large containers, to be bottled and ready for sale in a couple of weeks. We are definitely going back to get a bottle!