My husband has made his own beer for several years, and this spring, we decided to make our first batch of birch sap beer, inspired by a couple whose B&B we visited near Talkeetna. It was very tasty. Below is our experience of collecting, making, and tasting the result.
(At the bottom of this blog entry, I list several useful resources for readers who may be interested in exploring their own beer making).
Bryan bought four taps at Alaska Mill and Feed (www.alaskamillandfeed.com), which look like
slim, metal spouts, each one about ½ inch in diameter and 3
inches long. Our mentors indicated that the sap starts running
around April 20, but the winter of 2012-13 lasted f-o-r-e-v-e-r,
including three snow storms in May, so it wasn't until about May 15
that Bryan tapped four birch trees. To do so, he used a ½ inch
drill bit to cut an upward angled hole through the bark to the sap
layer and inserted the tightly fitting tap. Under this
spout, we hung a cleaned vinegar bottle, because the mouth is
narrow enough to limit entry of debris and also because we could
string a bungy cord through the handle and around the tree to hold
it in place.
Each afternoon, we tramped through the increasingly soft and slushy snow surrounding the trees to collect that day's accumulation. We strained the results through paper coffee filters before pouring the sap into wide mouthed jars that we froze. This was a fun endeavor, especially at that “hold-your-breath” time of year waiting for the winter to finally end and spring to burst forth, as it does here. The running of the sap represented the first discernible sign of spring! Since we enjoyed this process (and the result) and live in a spruce and birch forest, we plan to involve more trees next year (so we are saving additional vinegar bottles and malt jars!)
I was surprised how variable the output was. One tree was the champion producer, two others dribbled out negligible results, and a fourth was in between. When the big producer slowed just before the trees started to green up, about ten days later, we removed the taps and caulked the holes. Altogether, we collected about 2.5 gallons. Over the course of the summer, we will check those holes to make sure that the trees are not "weeping" there.