How To Extract Oil From Walnuts

You can extract oil from walnuts by pressing ground walnut kernels, and while it takes some patience, the process is simpler than you might think.
 
Walnut oil is prized for its rich, nutty flavor and its impressive list of health benefits, from omega-3 fatty acids to antioxidants.
 
If you’ve ever wondered how to extract oil from walnuts at home, you’re in the right place.
 
In this post, we’ll walk through how to extract oil from walnuts step by step, the tools you’ll need, and a few tips to get the most oil out of every batch.
 
Let’s dive in.
 

How to Extract Oil From Walnuts: The Basics

Learning how to extract oil from walnuts starts with understanding what’s inside the nut.
 
Walnuts are roughly 60% oil by weight, which means a pound of kernels can yield a surprising amount of golden, flavorful oil.
 
There are two main methods for how to extract oil from walnuts: cold pressing and hot pressing.
 
Each method of extracting oil from walnuts has its own pros and cons, and we’ll cover both below.
 

1. Gather Fresh Walnut Kernels

The first step in how to extract oil from walnuts is choosing good raw material.
 
Fresh, shelled walnut kernels work best because older nuts turn rancid and produce bitter oil.
 
You can shell walnuts by hand or buy pre-shelled kernels if you want to save time.
 
Aim for about two cups of kernels to get a decent amount of oil.
 

2. Decide Between Cold Pressing and Hot Pressing

When learning how to extract oil from walnuts, the pressing method matters a lot.
 
Cold pressing means grinding and pressing the nuts at low temperatures, which preserves flavor and nutrients.
 
Hot pressing involves heating the ground walnuts first, which helps you extract more oil but can reduce quality.
 
For home use, cold pressing is the safer choice if you want premium walnut oil.
 

Steps to Extract Oil From Walnuts at Home

Now let’s get into the practical part of how to extract oil from walnuts.
 
Here’s a simple method you can try with basic kitchen tools.
 

1. Grind the Walnuts Into a Paste

Start by blending your walnut kernels in a food processor until they form a thick, oily paste.
 
The finer you grind, the easier it will be to extract oil from walnuts later on.
 
Be patient here because releasing the oil begins with breaking down the cell walls of the nuts.
 

2. Warm the Paste Gently

Even with cold pressing, a little gentle warmth helps the oil flow more freely.
 
Place the paste in a bowl over warm water and stir for a few minutes, keeping the temperature low.
 
This step makes it easier to extract oil from walnuts without cooking away the nutrients.
 

3. Press the Paste to Release the Oil

Transfer the paste into a cheesecloth or nut milk bag and squeeze firmly over a bowl.
 
This is the moment where you actually extract oil from walnuts, and you’ll see it drip out slowly.
 
Keep squeezing until no more oil comes out, then set the leftover pulp aside for baking.
 
If you own an oil press, you can use it here to extract oil from walnuts much more efficiently.
 

4. Let the Oil Settle and Strain

Pour the collected oil into a clean glass jar and let it sit for a day.
 
Sediment and water will settle at the bottom, making it easier to separate pure oil from the rest.
 
Strain the oil once more through a fine filter, and your homemade walnut oil is ready.
 

5. Store the Oil Properly

Knowing how to extract oil from walnuts also means knowing how to keep it fresh.
 
Store your walnut oil in a dark glass bottle away from heat and light.
 
In the fridge, it can last several months, though it may solidify and need a few minutes at room temperature before use.
 

Tips for Getting the Most Oil From Walnuts

If you want to extract oil from walnuts more successfully, a few tricks make a big difference.
 
First, always use the freshest nuts you can find, since fresh kernels release more oil.
 
Second, grind the walnuts as finely as possible before pressing, because smaller particles mean better yield.
 
Third, don’t rush the pressing step; slow, steady pressure helps you extract oil from walnuts without losing any to spills.
 
Finally, consider using a dedicated oil press if you plan to extract oil from walnuts regularly, since it saves time and gets more oil out.
 

So, How to Extract Oil From Walnuts?

You can extract oil from walnuts by grinding fresh kernels into a paste and pressing them to release the oil.
 
Whether you choose cold pressing or hot pressing, the goal is the same: to extract oil from walnuts while keeping its rich flavor intact.
 
From gathering good kernels to storing your finished oil, each step in how to extract oil from walnuts is simple once you know what to do.
 
With a little patience and the right tools, you’ll be enjoying your own fresh walnut oil in no time.