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How to Make Full-Extract Cannabis Oil (FECO)

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In this post, you will learn more about full-extract cannabis oil, also known as FECO, a powerful cannabis plant extract with instructions for making your own medicine at home.

How to Make Full Extract Cannabis Oil (FECO)

What is Full Extract Cannabis Oil?

Full-extract cannabis oil, also known as FECO, is a concentrated, whole-plant, full-spectrum cannabis extract.

This means that all of the important plant compounds, from cannabinoids to terpenes and other plant materials, are present in the extract.

FECO is a powerful concentrated cannabis extract that interacts with our own endocannabinoid system.

FECO can be more potent than other products on the market today, making it an excellent choice to be used for medicinal purposes. 

Once the FECO is prepared, various application methods can be used, including sublingual absorption, topical preparations, and cannabis edibles.

It is not recommended to use FECO for inhalation or vaping.

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What Is The Difference Between FECO and RSO?

One important thing to note is that many people confuse FECO with RSO – also known as Rick Simpson Oil. 

Both FECO and RSO have the same final characteristics and appear very dark, thick, sticky, and tar-like consistency upon successful completion and both utilize alcohol as the solvent for extraction. 

The main difference between FECO and RSO is the type of alcohol used for the extraction.

FECO utilizes food-grade grain alcohol, a much safer solvent than the isopropyl alcohol used in the RSO method.

The final outcomes are similar, but isopropyl alcohol (rubbing alcohol, like the kind you would find in your medicine cabinet) IS NOT SAFE TO INGEST. 

We DO NOT recommend the RSO extraction method.

Again, here we are making full extract cannabis oil, FECO, with a tincture made with food-grade grain alcohol which is safe for human consumption.

At the end of this process, we will have evaporated off all of the alcohol, leaving a small amount of concentrated cannabis oil. 

It is important to note that at the end of this process, you will have collected a very small amount of oil.

A rough guestimate expects to use 1 cup of tincture and collect only approximately 3 milliliters of FECO. 

Super Quick Instructions

For my friends who just want a quick overview of the process, here it is.

Below you will find more instructions from each step. 

  1. Decarboxylate your cannabis 
  2. Prepare a cannabis alcohol tincture
  3. Evaporate off the alcohol
  4. Store your medicine
  5. Consume your medicine
Decarboxylating Cannabis for FECO

Step #1 Decarboxylate Your Cannabis

Before jumping in and simply pouring alcohol over your cannabis flower, you need to make sure you don’t forget this crucial step – decarboxylation.

Decarboxylation occurs when cannabis is exposed to heat, light, cofactors, or solvents.

Without decarboxylation, you may not experience the full range of beneficial health effects of cannabinoids like THC or CBD.

The goal in decarboxylation is to heat the cannabis flower at a low temperature over a long period of time to allow complete decarboxylation to occur, without destroying the other beneficial plant matter such as the terpenes or flavonoids. 

Decarboxylation can be done in your own kitchen at home by baking the dried cannabis flowers in an oven-safe baking dish or mason jar in the oven at 240° F for 40 minutes.

The time and temperature should be adjusted if you are working with CBD hemp flower, as CBDA converts to CBD at a different temperature than THCA to THC.

We recommend baking at 240° F for 80 minutes for CBD flowers.

Click here for a more in-depth guide and video tutorial on cannabis decarboxylation.

Cannabis Tincture for FECO

Step # 2 Make A Cannabis Tincture with Alcohol

The second step to making full extract cannabis oil is to prepare a cannabis tincture with alcohol.

For this process, you will need your decarboxylated cannabis flowers and food-grade high-proof grain alcohol.

It is extremely important to use high-proof grain alcohol, we recommend Everclear 190 Proof, for the best quality extraction.

You will not achieve the same results with lower proof alcohol like vodka or rum.

To make a tincture: 

  1. In a mason jar, pour Everclear alcohol over the decarboxylated cannabis flower. Screw the cap tightly and shake gently. 
  2. Place the mason jar in a cool, dark location like a cupboard or closet and leave it to sit for 24 hours.
  3. After 24 hours, strain the cannabis tincture through a coffee filter or cheesecloth into a clean mason jar, separating the plant-matter from the alcohol.

From here, you have many choices on what you want to do with your tincture.

You can leave it as is, not evaporate, and simply have an alcohol tincture to use in cocktails like cannabis sangria or cannabis strawberry lemonade.

You can also pour the tincture over white sugar and make cannabis sugar with it. 

You can also move on to step 3, evaporating off the alcohol to make FECO. 

Pouring Tincture into Crock Pot

Step # 3 Evaporate Off the Alcohol

There are a few safety concerns to keep in mind before you start evaporating off the alcohol of your tincture.

We are using high-proof alcohol, which is EXTREMELY FLAMMABLE.

That is why we want to be careful about how we evaporate off the alcohol.

If you introduce an open flame while you’re trying to evaporate the alcohol, you run the risk of starting a fire or, worse, having an explosion.

We do not ever recommend evaporating off the alcohol over an open flame or gas burning stove. This is dangerous and unnecessary.

Alcohol Will Evaporate At Room Temperature

You can allow the alcohol to evaporate off just by sitting at room temperature, but that takes a very long time.

Here is a picture of a shot glass we filled with 1 ounce of the tincture.

It took approximately 1 week for all of the alcohol to evaporate off.

We recommend adding a coffee filter or other breathable material to the container’s top to keep any contaminants from getting in.

How to Make Full Extract Cannabis Oil (FECO)

Evaporate Alcohol With Heat

We want to introduce heat to help evaporate off the alcohol faster, without an open flame.

My safe solution has ended up being a small (0.65 quart) mini-warming crockpot.

This is a perfect solution because the mini-crockpot does not heat above 160° F, meaning it won’t destroy the plant cannabinoids.

I also recommend using the mini-warming crockpot because the small surface area makes it easier to collect the sticky final product. 

Simply pour the tincture into the mini-crockpot and allow it to heat up, uncovered.

You want to make sure you do not heat it with the lid on, which will slow down the evaporation process.

Additionally, I recommend doing this in a room with good ventilation to keep the windows open and airflow moving.

The evaporating alcohol has a strong odor that may be unpleasant in a small, confined space.

Glass Syringe

Step #4 – Store Your Medicine

When you have successfully evaporated off all of the alcohol, you will be left with a small amount of very dark, thick, sticky, and tar or molasses-like substance.

This is your FECO, full extract cannabis oil.

From here, you can collect it and store it in an airtight vessel of choice.

Collecting the FECO may be difficult due to its sticky nature.

I recommend using these reusable glass locking syringes.

Not only are they a great way to store your medicine, but they contain mL labeling, which helps make dosing easier. 

How to Make Full Extract Cannabis Oil (FECO)

Step #5 – How to Consume Your Medicine

Once the FECO is prepared, various application methods can be used, including sublingual absorption, topical preparations, and cannabis edibles.

Again, it is not recommended to use FECO for inhalation or vaping

How to Mix FECO With A Carrier Oil

Because of the sticky, molasses-like texture of the FECO, many people prefer to mix in a carrier oil, which will help to dilute the FECO and make a more viscous, tincture-like oil. 

One of the most popular carrier oils to mix FECO with is MCT-infused oil, a form of coconut oil that is liquid at room temperature.

If you want an oil-based tincture, I recommend mixing 1mL of FECO with 29mL of MCT oil for a 30mL infusion.

Note: you may need to heat them together slightly to get them to combine.

If you have to heat them together, do NOT heat them in the microwave.

Combine in a double boiler. You can then store in a dark bottle tincture like this one.

How To Put FECO Into Capsules

Another way to consume FECO is to put it into capsules that can then be swallowed or used as a rectal or vaginal suppository.

Having a capsule maker like this can be helpful.

How to Make Full Extract Cannabis Oil (FECO)

Full Extract Cannabis Oil (FECO)

Yield: 2mL
Prep Time: 1 day
Cook Time: 5 hours
Total Time: 1 day 5 hours

Learn more about Full Extract Cannabis Oil (FECO) a powerful cannabis plant extract with instructions for how to make your own it at home.


  • ½ ounce decarboxylated cannabis flower
  • 8 ounces Everclear Grain Alcohol (190 proof)*


    1. Decarboxylate your cannabis by baking it in a 240° F oven for 40 minutes. Click here for a full tutorial on cannabis decarboxylation, if needed.
    2. Place the decarboxylated cannabis flower at the bottom of a pint-sized mason jar.
    3. Pour the Everclear over the cannabis flower. You only need to add enough alcohol to completely cover the plant matter*. Screw the cap tightly and shake gently.
    4. Place the mason jar in a cool, dark location like a cupboard or closet and leave to sit for 24-hours.
    5. After 24-hours, strain the cannabis tincture through a coffee filter or cheesecloth into a clean mason jar, separating the plant-matter from the alcohol.
    6. Pour the strained cannabis tincture into a mini warming crockpot. Turn the warming crockpot on and allow the mixture to cook down without the lid. 1 cup will take approximately 4-5 hours.
    7. Store your medicine in a glass syringe, capsule, or another airtight container. Store in a cool, dark place like a medicine cabinet.

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