Can
you identify what's in this photo?
Each Wednesday morning
on Camp Lutherlyn's Facebook page
the Lutherlyn Environmental
Education Program posts a photo.
Readers
have all morning and afternoon
to
make their best guess about what the photo is.
Around
6 pm LEEP provides the answer and a brief explanation.
Each
week's What is it Wednesday post
will
also be posted on the Nature of Lutherlyn blog,
after it is posted on Facebook,
sometimes
with additional bonus information.
In
addition to bringing you current editions of What is it Wednesday
on the
Nature of Lutherlyn blog,
we
will be reposting old editions,
creating
a What is it Wednesday archive.
This
photo was posted as a What is it Wednesday on
February 26, 2020.
And
the answer is....
These are hydrometers calibrated for maple syrup and sap,
used during the maple sugaring process.
A hydrometer is an instrument that measures the density of
liquid. The hydrometer on the left is used to determine when maple sap has been
boiled long enough that it has turned into maple syrup.
If this hydrometer is
floated in a container of boiling sap/syrup and it floats so the surface of the
liquid is at the top red line, the sap has become syrup. If it doesn’t float,
or floats with the surface of the liquid at a point higher than the top red
line, the liquid is not yet dense enough to be considered syrup, and must be
boiled longer. (The lower red line is the float-point for cooled syrup.)
The hydrometer on the right is a sap hydrometer. It is used
to determine the amount of sugar in sap before it has been boiled.
The sugar content of sap determines how many gallons of sap
will be needed to produce a gallon of syrup, and how long it will need to be
boiled. It is also interesting to track the sugar content of sap over the years
and see if there are any variations related to yearly weather conditions or different
locations.
At Lutherlyn we have very few sugar maple trees but lots of
red maples. The trees we tap are all red maples. The sap we gather from red maple trees at
Lutherlyn ranges from about 1% to 1.5%
sugar content That means we have to boil between 50-85 gallons of sap to make
one gallon of maple syrup! As its name implies, sugar maple sap has the highest
sugar content of all maples: usually about 2%-2.5%, which means it takes roughly
35-45 gallons of sugar maple sap to make a gallon of maple syrup. Percentage
sugar content in a liquid is also known as brix, and is referred to in wine,
beer, and candy making, as well as maple sugaring.
Join us at Lutherlyn for the Maple Sugaring Saturday Safari, open to the public -- always the first Saturday in March! Everyone will learn to identify maple trees in winter, pick and tap a tree, bring sap to
the sugar shack, and of course, taste our own maple syrup! For more info and to register check out www.lutherlyn.com/safari.
Like and follow Camp Lutherlyn on
Facebook, to see What is it Wednesday posts when
they come out and have the opportunity to share your guesses in the comments!