Wednesday, March 12, 2014

Beyond Maple Syrup: Tapping Black Walnut Trees

Tapping Black Walnut trees for syrup

As the days lengthen and the first signs of warmth, sun, and green grass creep into our lives, we’ve been undertaking a super-exciting project: tapping the black walnut trees on our property to make syrup.  Although sugar maples are the tree of choice for commercial sugaring due to their high ratio of sugar to water in their sap, many other types of trees can be tapped to make syrup, including silver and red maples, hickory, birch, box elder, and walnuts.
Having tasted the delicious, light, and refreshing sap of black walnut at our neighbor’s house last winter, we were eager to tap our own trees this year, and to experiment with making black walnut syrup.

First off, a few basics of tapping:

  • Trees should be at least 14″ in diameter
  • You will need: a drill, tapping spouts, buckets for collection, and a big pot in which to boil down the sap
  • Ideal tapping conditions are a combination of cold nights and warmer days.  For maple trees, daytime temperatures should be in the 40′s; our black walnuts have been flowing this week in daytime temperatures of 50-60 degrees.

Here’s how it’s done:

using a drill to create a hole for the spile
First, we used a 5/16th drill bit to create a small hole for the spout.
hammer and spile
Gently hammer in the spout (we used this one from Leader Evaporator).
bucket to collect black walnut sap
Brian drilled holes in food-grade buckets to collect the sap.  collecting black walnut sap
We tapped 14 trees in total around the property, creating a sort of “sap line” that we walk each day.  That, in and of itself, is such a satisfying process, noticing the trees in our woods, hearing bird calls, walking together as a family, as the kids get to help collect and pour the sap.
sap collecting in bucket
Drip. drip. drip.
full container of black walnut sap
Almost full to the top!
Collect black wanut sap in a bucket
We pour each sap bucket into this larger 5 gallon food-grade bucket to bring it back home.
Drink sap fresh or boil
The sap itself is full of nutrients, cold, with just a hint of sweetness.  It is refreshingly light with a slight nutty flavor, and we will sometimes just drink it as is!
boiling down black walnut sap for syrup
Next, we boil the sap either on the stove top, or on our campfire ring.  This was about 9 quarts of sap, which boiled down to…
black walnut syrup
About 12 ounces of sweet black walnut syrup!
At first taste, black walnut syrup is intensely sweet, but has a certain nuttiness to it.  I enjoyed the flavor quite a bit, especially on top of French toast!  I would estimate that it took about 3 hours of continuous boiling to achieve the color and sweetness that we desired, and I would highly recommend boiling the sap out of doors, as it produced copious amounts of steam!

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