How To Make Black Walnut Oil

You can make black walnut oil at home by harvesting the nuts, cracking them open, and extracting the oil from the kernels.
 
It takes some patience and elbow grease, but the rich, nutty result is worth every minute.
 
If you’ve been asking how to make black walnut oil, you’re in the right place because this guide walks you through the whole process step by step.
 
Black walnuts have a bold, earthy flavor and a high oil content, which makes them a great candidate for homemade oil.
 
In this post, we’ll cover how to make black walnut oil, the tools you need, and the best methods for getting a clean, flavorful batch.
 
Let’s dive in.
 

How to Make Black Walnut Oil: The Basics

Learning how to make black walnut oil starts with understanding what you’re working with, and it helps to know the steps before you begin.
 
Black walnuts are tougher than regular walnuts, so the process demands a bit more effort.
 
Here’s what makes the process work.
 

1. Harvesting and Curing the Nuts

To make black walnut oil, you first need fully mature black walnuts.
 
Hulls turn from green to yellow-green and eventually black, which signals they’re ready.
 
Collect them wearing gloves because the hulls stain your hands for weeks.
 
After harvesting, cure the nuts in a cool, dry, well-ventilated spot for several weeks.
 
Curing reduces moisture, which is essential before you make black walnut oil because damp kernels spoil quickly.
 

2. Cracking and Shelling the Kernels

Once cured, crack the hard shells with a hammer, a vise, or a dedicated nutcracker.
 
Black walnut shells are incredibly hard, so patience is key here.
 
Pick out the kernels carefully and discard any shriveled or moldy pieces.
 
You’ll need about two to three cups of clean kernels to make a decent batch of black walnut oil.
 

3. Drying the Kernels Before Extraction

Spread the kernels on a baking sheet and let them air-dry for a day or two.
 
You can also dry them in the oven on the lowest setting for a couple of hours.
 
Drier kernels release their oil more easily when you make black walnut oil at home.
 

Methods to Make Black Walnut Oil

There are a few ways to make black walnut oil, and each one suits different budgets and patience levels.
 
Here’s how each method works.
 

1. Cold Pressing

Cold pressing is the traditional and purest way to make black walnut oil.
 
You grind the kernels into a paste and press them slowly using a manual or electric oil press.
 
The oil that comes out is unrefined, rich in flavor, and packed with nutrients.
 
The downside is that cold pressing yields less oil than other methods.
 

2. The Heat Extraction Method

If you want to make black walnut oil faster, gently heat the ground kernels in a double boiler.
 
Keep the temperature low so you don’t scorch the oil.
 
Stir occasionally and let the oil rise to the surface.
 
Then skim or strain it off into a clean jar.
 

3. Using a Blender and Strainer

For small batches, blend the kernels with a little warm water until you get a thick paste.
 
Squeeze the paste through a cheesecloth or fine mesh strainer to collect the oil.
 
This is the simplest way to make black walnut oil if you don’t own a press.
 
It won’t yield as much, but it works well for home use.
 

Tips for Storing and Using Black Walnut Oil

Once you make black walnut oil, storing it properly keeps it fresh for months.
 
Pour it into a dark glass bottle and seal it tightly.
 
Keep it in a cool, dark cabinet or the fridge to slow spoilage.
 
Because it’s unrefined, it can turn rancid faster than store-bought oils.
 
Use your homemade black walnut oil in salad dressings, baked goods, or as a finishing drizzle over roasted vegetables.
 
Some people also use it for skin and hair care thanks to its nourishing fatty acids.
 

So, How Do You Make Black Walnut Oil?

You make black walnut oil by harvesting and curing the nuts, cracking the shells, drying the kernels, and extracting the oil through cold pressing, gentle heating, or blending.
 
It’s a hands-on process, but knowing how to make black walnut oil means you get a fresh, flavorful oil you can’t easily buy in stores.
 
Whether you choose cold pressing for purity or heat extraction for speed, the result is a rich, nutty oil worth the effort.
 
So grab your nuts, roll up your sleeves, and try making black walnut oil yourself.