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Making weed or pot butter is about as easy as you can imagine. The trick mainly lies in getting the ingredients and procedure right. Pot butter is essentially butter or oil infused with cannabis or weed. Once ready, you can use the butter to make any kind of edibles of your choice.

The active cannabinoid in pot butter is, of course, tetrahydrocannabinol (THC), which is responsible for the ecstatic feeling you get when you smoke or vape marijuana. Using pot butter is a less intense or, rather, more sober way to consume cannabis.

However, you should take care not to overlook your maximum effective dose, i.e., your minimum cannabis tolerance level, when making your weed butter. The best practice is often to start with a lower amount and add more as you see fit.

 The process of how to make pot butter in a mason jar is described in detail in the subsequent paragraphs. Bear in mind that it might take some time, especially at the decarboxylation and infusion stages. So, you'll need to be patient if you must make an effective pot butter.

Note that the final product can also be referred to as cannabutter or cannabis-infused butter. It is basically marijuana mixed with butter or oil. Once ready, pot butter is a fine ingredient for making a number of marijuana-derived products.

Why Use a Mason Jar instead of a Baking Sheet?

There are more than one ways to decarboxylate, but our focus here is using a mason jar. We already know that a mason jar is perfect for growing and curing cannabis. It is also an ideal container for storing your cannabis, as it has just the right amount of air, which is crucial for keeping the marijuana fresh.

You need to be able to preserve your marijuana in its natural form if you want to retain the original flavor and potency of the material.

That said, you should also know that you can use the mason jar in the decarboxylation process. The result you get from decarbing in a mason jar is quite different from what you get if you use a baking sheet.

First, you can be sure that the evaporating terpenes will not escape from the glass jar. Instead, they'll stick to the wall of the jar. At the infusion stage, these trapped terpene molecules can be preserved and retained in the final product.

Secondly, decarboxylating in a mason jar significantly eliminates the strong cannabis odors from the pot butter product.

And finally, since the cannabis is not directly in contact with the air in the oven, the possibility of burning away your cannabis during the heating process is much slimmer.

Tools Needed

You'll need the following materials:


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  • An airtight mason jar
  • Baking tray
  • Oven
  • Oven gloves
  • Kitchen towel
  • Scissors or hand grinder for the cannabis flower
  • Thermometer
  • Cheesecloth or metal strainer
  • Saucepan or pot for cooking
  • Slow cooker


The ingredients used may vary slightly, especially as regards dosage, but you can use the specification given below:

  • 1 cup of butter
  • 1 cup (not more than 10g) of ground, decarboxylated cannabis
  • Water

Directions on How to Make Pot Butter in a Mason Jar

The first step in the process of making your weed butter is decarboxylation. It is at this first stage that you activate the psychoactive property of the THC molecules.

Do note, however, that you need to grind your cannabis buds first. Do not grind too finely. Use a hand grinder or a pair of scissors to cut the plant materials into tiny little bits — the size of a grain of rice is just fine.

Also, when choosing a medium for embedding cannabis, butter is a very popular choice because of how easily THC blends into it. You can use olive oil, canna oil, or coconut oil. But among them all, coconut oil exhibits the ability to retain much more amount of cannabinoids than the others.

Step 1: Decarboxylation

If you skip this step, you'll end up with a weak or inactive product when you're done. The cannabis buds produce an inactive intermediary compound known as THCA. Upon heating, the THCA molecule is converted to THC, the molecule responsible for the ‘high effect'. This is why it is crucial to always decarboxylate if you're making cannabis-infused edibles.

  1. Before introducing the cannabis into the oven, first set your oven at 245ºF and preheat for up to 15 minutes. Place the oven rack in the center position.
  2. Place the ground cannabis in the mason jar and hold the lid tight.
  3. Wet the kitchen towel slightly, spread it over the baking tray, and put the mason jar on top of the damp towel. This tactic will hold the jar in place and prevent it from falling over.
  4. You can now place the baking tray in the oven and leave the heat on for 1 hour. Once every 15 minutes, use the oven gloves to bring out the mason jar and shake it to spread the cannabis evenly. This ensures the heat gets to every part of the marijuana. Note that heating time may vary depending on the strain of cannabis you're using, but it's mostly between 45 minutes and 1 hour.
  5. After 1 hour of heating, bring out the mason jar and allow the content to cool for another 30 minutes.

Step 2: Infusing the decarboxylated cannabis with butter

The next important thing to do is to infuse the decarboxylated cannabis into butter. First, the butter needs to be melted.

  1. Add a cup of water and butter into the saucepan and allow it to simmer over very low heat on the slow cooker until the butter melts completely. Stir the mixture intermittently to avoid scorching the butter.
  2. Add the decarboxylated cannabis into the saucepan and let it simmer on low heat for about 3-4 hours. Use a thermometer to ensure the temperature does not exceed 180°F.
  3. Stir the content of the pan every 30 minutes to ensure an even spread of heat.

Step 3: Straining and storing the pot butter

After heating for 3-4 hours, turn off the heat and let the cannabutter cool for another 30 minutes. Strain the cannabutter with cheesecloth into a container, preferably the mason jar.

Set a funnel on top of the mason jar and line it with cheesecloth. Now pour the cooled butter over the cheesecloth and funnel. Avoid squeezing the cheesecloth too hard to prevent bad-tasting plant materials from seeping through into the butter below.

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You can either use the pot butter immediately or store it in a fridge for later use. If well-sealed in a mason jar, it could last for up to six months.


Getting the right dosage is important when making weed butter. You can refer to this dosing guide for making edibles.

Getting More Out of Cannabis

Following the legalization of cannabis consumption and infusion with food products, a lot had changed. New knowledge and ways of putting marijuana to productive use keep emerging.

For a chance to get a front-row seat to see the developing trends and opportunities in the cannabis industry today, you can enroll for professional certifications in a cannabis course at the Cannabis Training University. The program is entirely online. Whether you want to learn how to cook with cannabis or launch your cannabis career or grow for personal use, you can gain the skills you need to get started at Cannabis Training University.

Enroll Now