Making CBD oil with coconut oil involves gently heating hemp flower in coconut oil over several hours to extract the cannabinoids into the fat. The process is straightforward, requires minimal equipment, and produces a versatile oil you can use sublingually, in food, or on skin. The key variables are temperature control and time.
Why Coconut Oil Works Well as a Carrier
Coconut oil is rich in medium-chain triglycerides (MCTs), a type of fat that the body absorbs more readily than the long-chain fats found in olive oil or most other cooking oils. CBD is fat-soluble, meaning it dissolves in and binds to these fat molecules. When you consume CBD in MCT-rich coconut oil, the oral absorption of cannabinoids improves compared to taking CBD without a fatty carrier. This is the same reason many commercial CBD tinctures use MCT oil as their base.
Both refined and unrefined coconut oil work. Unrefined (virgin) coconut oil has a coconut flavor and a smoke point of 350°F (177°C). Refined coconut oil is flavor-neutral with a higher smoke point of 400 to 450°F (204 to 232°C). Since you’ll be infusing well below either threshold, the choice comes down to whether you want coconut flavor in your finished product.
What You Need
- Hemp flower: Use high-CBD, low-THC hemp flower. The amount depends on your desired potency, but a common starting ratio is 7 to 14 grams of flower per cup of coconut oil.
- Coconut oil: One cup, refined or unrefined.
- Baking sheet and parchment paper: For decarboxylation.
- Slow cooker, double boiler, or saucepan: For the infusion.
- Cheesecloth or fine mesh strainer: For filtering plant material.
- Glass jar with a tight lid: For storage.
- Kitchen thermometer: Highly recommended for monitoring heat.
Decarboxylation: The Step You Can’t Skip
Raw hemp flower contains CBDA, the acidic precursor to CBD. CBDA doesn’t have the same effects as CBD until it’s been heated in a process called decarboxylation, which removes a carboxyl group from the molecule and converts it into active CBD. Without this step, your finished oil will be far less potent.
Preheat your oven to 240°F (115°C). Break the hemp flower into small pieces, spread it evenly on a parchment-lined baking sheet, and bake for 30 to 40 minutes. The flower should look slightly toasted and feel dry to the touch. Stir it once halfway through to ensure even heating. Keep the temperature below 300°F, as excessive heat destroys cannabinoids rather than activating them.
Three Infusion Methods Compared
Slow Cooker
This is the most forgiving method. Combine the decarboxylated flower and coconut oil in the slow cooker, set it to low or warm (whichever keeps the mixture below 200°F), and let it infuse for 4 to 8 hours. Slow cookers provide consistent, low heat that can simmer for hours without burning the oil or cannabis. Some people extend the infusion to 12 or even 18 hours for maximum extraction. Stir occasionally. The main advantage here is that you can walk away and let the slow cooker do the work.
Double Boiler
Fill the bottom pot with water and place the top pot or a heatproof bowl on top. Add the coconut oil and decarboxylated flower to the upper vessel. The water in the bottom pot heats the oil indirectly, which naturally prevents the temperature from spiking. Keep the water at a gentle simmer, not a rolling boil. The tradeoff is time: a double boiler typically runs for 2 to 3 hours, and shorter infusions may not extract all the cannabinoids from the plant material. If you use this method, aim for at least 3 hours and stir frequently.
Stovetop Saucepan
This is the fastest option but requires the most attention. Combine the oil and flower in a saucepan over the lowest heat setting your stove offers. Use a kitchen thermometer and keep the oil between 160°F and 200°F (71 to 93°C). Stir constantly or very frequently. Infuse for 2 to 3 hours. The risk here is that direct heat can create hot spots that degrade cannabinoids, so never leave the stove unattended and keep the flame as low as possible.
Straining and Finishing
Once the infusion is complete, let the mixture cool slightly so it’s safe to handle but still liquid. Place a cheesecloth or fine mesh strainer over a glass jar and pour the oil through it. Let gravity do the work. You can gently press the plant material with a spoon to extract remaining oil, though squeezing too hard pushes through chlorophyll and other compounds that give the oil a bitter, grassy taste. Discard the spent plant material.
The finished oil will look greenish to golden depending on how much plant material made it through. It solidifies at room temperature like regular coconut oil and liquefies when warmed above about 76°F (24°C).
Adding Sunflower Lecithin
Some people add a teaspoon of sunflower lecithin per cup of oil during the infusion. Lecithin is a phospholipid that acts as an emulsifier, helping to break down and disperse fat molecules. When combined with CBD oil, it can increase the bioavailability and absorption of the cannabinoids, meaning your body may take up more CBD per dose. It also helps the oil blend more smoothly into foods and beverages. This step is optional, but it’s a simple addition that can improve the effectiveness of your finished product.
Figuring Out Potency
Homemade CBD oil won’t have the precise milligram labeling of a commercial product, but you can estimate. If your hemp flower has a certificate of analysis listing its CBD percentage (most reputable sellers provide one), multiply the weight of flower used by that percentage. For example, 10 grams of flower at 15% CBD contains roughly 1,500 mg of CBD. If you infuse that into one cup of coconut oil (about 16 tablespoons), each tablespoon contains approximately 94 mg of CBD. This is a rough ceiling, not an exact figure, because not all the CBD transfers perfectly into the oil during infusion. A reasonable estimate is that home infusion captures 60% to 80% of the available cannabinoids. Start with a small dose (half a teaspoon) and adjust from there.
Storage and Shelf Life
Light, heat, and oxygen are the three forces that break down cannabinoids over time. UV light damages the molecular structure of CBD, heat makes the compounds unstable, and oxygen triggers oxidation that reduces potency while changing the oil’s color, smell, and taste. Even with perfect storage, cannabinoid potency can decrease by 20% to 40% after 24 months.
For day-to-day use, keep the oil in a dark glass jar in a cool, dark cupboard. This is sufficient for oil you’ll use within a few months. For longer storage, refrigeration significantly slows degradation and keeps the oil effective for 12 to 24 months. You can also freeze portions in airtight, opaque containers if you’ve made a large batch. Always use a clean utensil when scooping from the jar to avoid introducing moisture or bacteria.
Coconut oil itself is naturally resistant to rancidity compared to many other oils, which is another practical reason it pairs well with CBD for homemade preparations. If your oil develops an off smell, unusual discoloration, or a sour taste, it has likely degraded and should be discarded.