How To Make Black Walnut Syrup

Making black walnut syrup is a rewarding process that turns foraged black walnuts into a rich, dark, and delicious syrup you can pour over pancakes, waffles, or even ice cream.
 
If you’ve ever wondered how to make black walnut syrup, you’re in for a treat because the process is simpler than you might think.
 
It does take some patience and a few specific steps, but the end result is well worth the effort.
 
In this post, we’ll walk through how to make black walnut syrup from tapping the trees to boiling down the sap into a sweet, thick syrup.
 
Let’s dive into the details of making black walnut syrup at home.
 

How to Make Black Walnut Syrup: The Tapping Process

To make black walnut syrup, you first need to tap the trees, which is where the whole process begins.
 
Black walnut trees produce sap that can be collected and boiled down, just like maple trees.
 
The best time to tap is in late winter or early spring when daytime temperatures rise above freezing but nighttime temps still drop below 32°F.
 
This freeze-thaw cycle is what gets the sap flowing, and it’s crucial for making black walnut syrup successfully.
 
Here’s how to tap your black walnut trees properly.
 

1. Choose the Right Trees

To make black walnut syrup, you need mature black walnut trees that are at least 12 inches in diameter.
 
Younger or smaller trees won’t produce enough sap to make black walnut syrup worth your time.
 
Look for healthy trees with no signs of disease or damage, as stressed trees produce less sap.
 

2. Gather Your Tapping Supplies

You’ll need a drill with a 7/16-inch bit, spiles (taps), collection buckets or bags, and a hammer.
 
Make sure your spiles are food-grade and clean before you start making black walnut syrup.
 
Sterilize your equipment to prevent any bacteria from contaminating the sap.
 

3. Drill and Insert the Spile

Drill a hole about 2 inches deep into the tree at a slight upward angle.
 
This angle helps the sap flow out and into your collection container as you work on making black walnut syrup.
 
Insert the spile gently with a hammer, then hang your bucket or bag beneath it.
 

Collecting Sap for Black Walnut Syrup

Once your trees are tapped, collecting sap is the next step in making black walnut syrup.
 
Sap flow varies depending on weather, so check your buckets daily, especially on warm, sunny days.
 
You’ll need a lot of sap to make black walnut syrup because it takes roughly 40 to 50 gallons of sap to produce just one gallon of syrup.
 

1. Store Sap Properly

Keep collected sap cool until you’re ready to boil it for making black walnut syrup.
 
You can store it in food-grade buckets in a refrigerator or a cold garage for a few days.
 
If you’re not boiling right away, freeze the sap to keep it fresh for making black walnut syrup later.
 

2. Strain Out Debris

Before boiling, strain the sap through a fine mesh filter or cheesecloth.
 
This removes bark, insects, and other debris that can affect the taste of your black walnut syrup.
 
Straining is a small step but makes a big difference in the quality of your final product.
 

Boiling Sap Into Black Walnut Syrup

Boiling is where the magic happens when you’re making black walnut syrup.
 
This step concentrates the sap, turning it into the rich, dark syrup you’re after.
 
You can boil outdoors over a fire or use a large pot on a propane burner.
 
Just be prepared for a lot of steam, so outdoor boiling is usually the best choice.
 

1. Boil in Batches

Add sap to your boiling pan and keep adding more as it evaporates.
 
This continuous process helps you make black walnut syrup more efficiently without starting over each time.
 
It can take hours, so plan to spend a good part of your day on this step.
 

2. Finish Indoors

Once the sap has reduced significantly, finish boiling it indoors on your stove.
 
This gives you more control over the final consistency when making black walnut syrup.
 
Use a candy thermometer and stop when the syrup reaches 219°F, which is the sweet spot for syrup.
 

3. Filter and Bottle

Filter the finished black walnut syrup one more time through a fine filter.
 
Pour it into sterilized glass jars or bottles while it’s still hot.
 
Seal the jars and store your homemade black walnut syrup in a cool, dark place.
 

So, How Do You Make Black Walnut Syrup?

Making black walnut syrup involves tapping black walnut trees, collecting the sap, and boiling it down into a rich, dark syrup.
 
It’s a labor of love, but the result is a unique, flavorful syrup you can’t easily buy in stores.
 
With patience and the right equipment, you can make black walnut syrup at home and enjoy it all year long.
 
So go ahead and give it a try, because there’s nothing quite like the taste of homemade black walnut syrup.