For Adults 21+ Only: This guide is for educational purposes only. Cannabis butter is for adults 21 and older in legal states. Always follow Vermont law. Start with very small amounts. Effects may be delayed by 1 to 2 hours or more. Do not drive after consuming cannabis-infused foods.
Cannabis butter often called cannabutter is one of the most useful things you can make at home with cannabis. It forms the base for a wide range of infused foods: cookies, brownies, pasta sauces, and more. Once you have made a batch, you can use it in place of regular butter in almost any recipe.
But making effective cannabutter takes more than just melting butter with cannabis. If you skip the science, you will end up with a product that barely works. This guide explains the process clearly, step by step, including the chemistry that makes it effective and the safety information you need before you start.
At Juana’s Garden in Montpelier, Vermont, we believe that educated adults make smarter, safer choices. This guide is for information only we are not encouraging consumption, just explaining how it works.
The Science Behind Cannabutter: Why You Cannot Skip Decarboxylation
This is the single most important section of this guide. If you do not understand this, your cannabutter will not work properly.
Raw cannabis contains THCA tetrahydrocannabinolic acid. THCA is not psychoactive. It does not produce effects when eaten. For cannabis to be active in food, the THCA must be converted to THC through a process called decarboxylation also called ‘decarbing.’
Decarboxylation happens when cannabis is exposed to heat. The heat removes a carboxyl group from the THCA molecule, converting it into the psychoactive THC your body can absorb.
Decarboxylation Temperature and Time
| Temperature (Fahrenheit) | Temperature (Celsius) | Recommended Time |
| 220°F | 105°C | 45 minutes |
| 230°F | 110°C | 35 minutes |
| 240°F | 115°C | 30 minutes |
Lower temperatures preserve more terpenes but take longer. Higher temperatures work faster but may degrade some beneficial compounds. Avoid going above 250°F as this can destroy THC.
After decarboxylation, THC is present but still needs to bond to a fat to be properly absorbed by the body. This is why butter works so well it is high in fat, and THC binds to fat molecules during the infusion process.
To learn more about how cannabinoids interact with the body, read our guide on the effects of cannabinoids on the brain.
What You Need to Make Cannabutter
Ingredients
- Decarboxylated cannabis (see Step 1 below)
- 1 cup (225g) of unsalted butter use good quality butter with higher fat content
- 1 cup of water helps regulate temperature and prevents burning
Equipment
- Oven and baking sheet for decarboxylation
- Parchment paper
- Saucepan or double boiler
- Fine mesh strainer or cheesecloth
- Glass jar or airtight container for storage
- Kitchen thermometer (recommended)
- Grinder or scissors
A note on ratios: the standard ratio is 1 cup of butter to 1 cup (approximately 7 to 10 grams) of ground cannabis. However, potency varies enormously depending on the THC percentage of your cannabis. For beginners, less is always better. You can always add more to your next batch you cannot remove what is already there.
Our edible dosage calculator can help you estimate potency based on the THC percentage of your cannabis.
Step-by-Step: How to Make Cannabutter
Step 1: Decarboxylate Your Cannabis
Preheat your oven to 230 to 240 degrees Fahrenheit (110 to 115 Celsius). Grind your cannabis coarsely not too fine, or plant material will be harder to strain later. Spread it evenly on a baking sheet lined with parchment paper. Bake for 30 to 40 minutes, stirring gently every 10 minutes. The cannabis should turn from bright green to a slightly toasted, light brown colour. Remove from the oven and let it cool completely before moving to the next step. This step is non-negotiable skipping it will produce weak or ineffective butter.
Step 2: Melt Butter With Water
Add 1 cup of water and 1 cup of butter to a saucepan or the top of a double boiler. Melt the butter on low heat. Adding water helps keep the temperature stable and prevents the butter from scorching. The water will be separated out later and does not dilute the final product.
Step 3: Add Decarboxylated Cannabis
Once the butter is fully melted, add your decarboxylated cannabis to the saucepan. Stir to combine. Maintain a very low heat the mixture should barely simmer, never boil. The ideal temperature range is 160 to 200 degrees Fahrenheit (70 to 93 Celsius). A kitchen thermometer is useful here. Too hot and you will degrade the THC. Too cool and the infusion will be less effective.
Step 4: Simmer Low and Slow
Keep the mixture on very low heat for 2 to 3 hours, stirring every 20 to 30 minutes. The long, slow simmer allows the THC to fully bind to the fat molecules in the butter. You will notice the mixture takes on a green colour as the plant compounds infuse into the butter. Do not rush this step.
Step 5: Strain the Mixture
After simmering, remove from heat and allow it to cool slightly hot liquid and cheesecloth can be dangerous. Place a fine mesh strainer or a double layer of cheesecloth over a glass jar or bowl. Pour the mixture through slowly. Press or squeeze gently to extract as much butter as possible, but do not squeeze too hard or plant material will push through and make the butter bitter. Discard the plant material.
Step 6: Refrigerate and Separate
Place the jar in the refrigerator for at least 2 hours, ideally overnight. The butter will solidify on top and the water will settle below. Once fully solidified, use a knife to lift the butter disc away from the water. Discard the water. Pat the underside of the butter dry if needed.
Step 7: Store Properly
Store your cannabutter in an airtight container in the refrigerator for up to 2 weeks, or in the freezer for up to 6 months. Always label it clearly it should be kept completely separate from regular butter and stored out of reach of anyone who should not consume it, especially children.
Dosing Cannabutter: The Most Important Safety Step
Dosing homemade cannabutter is genuinely difficult. Unlike pre-made edibles with clear THC labels, homemade butter has no guaranteed potency. Even if you know the THC percentage of your cannabis, some is always lost during decarboxylation and infusion.
The standard estimate used by many experienced makers is that roughly 60 to 80 percent of available THC transfers into the butter during a well-executed infusion. But this is just an estimate.
How to Test Your Batch Safely
The safest way to determine the potency of your cannabutter is a controlled test dose. Use a very small amount the equivalent of one quarter teaspoon or less in a simple food like toast or crackers. Wait the full 2 hours before making any judgement about potency. Do this on a day when you have no obligations and do not need to drive.
| User Type | Test Dose | Wait Time |
| First-time user | 1/8 to 1/4 tsp of butter | Minimum 2 hours |
| Occasional user | 1/4 to 1/2 tsp of butter | Minimum 2 hours |
| Experienced user | Use your own judgement | Always wait at least 90 minutes |
These are general starting points only. Potency varies by batch. Always test before using in recipes you plan to share.
Never share cannabutter with anyone without their explicit knowledge and consent. Never serve it to anyone under 21. Always label stored cannabutter clearly so it cannot be confused with regular butter.
How to Use Cannabutter in Recipes
Once you know the approximate potency of your batch, cannabutter can replace regular butter in most baked goods and cooked dishes. Here are some practical tips:
- Start with recipes that call for small amounts of butter less cannabutter per serving means more control over dose
- Avoid high-heat cooking (above 300 degrees F) as this can degrade THC
- Mix cannabutter with regular butter to dilute potency and make dosing more manageable
- Calculate the dose per serving before baking divide total butter by number of servings
- Store finished baked goods properly and label them clearly
- Never leave infused foods where children, pets, or uninformed adults could access them
Storage and Shelf Life
| Storage Method | Temperature | Shelf Life |
| Refrigerator | 34 to 40°F (1 to 4°C) | Up to 2 weeks |
| Freezer (wrapped) | -0°F (-18°C) | Up to 6 months |
| Room temperature | Not recommended | 1 to 2 days maximum |
Common Mistakes and How to Avoid Them
| Mistake | Problem It Causes | How to Avoid |
| Skipping decarboxylation | Butter has little to no effect | Always decarb first 30 to 40 min at 230-240F |
| Boiling the mixture | THC degrades at high heat | Keep below 200F use a thermometer |
| Straining too aggressively | Bitter plant matter in butter | Strain gently, do not squeeze hard |
| Using too much cannabis | Unpredictably strong batch | Start with less you can make stronger next time |
| Not testing first | Accidental overconsumption in recipes | Always do a small test dose before cooking |
| Poor labelling | Others may consume accidentally | Label clearly and store separately |
Vermont Law and Homemade Cannabis Infusions
Adults 21 and older in Vermont can legally make cannabis-infused foods at home using cannabis purchased from a licensed dispensary. Vermont law allows possession of up to 2 ounces at home. Here is what you need to know:
| Vermont Rule | What It Means for Home Infusions |
| Legal age | 21+ only to purchase, possess, and use |
| Purchase source | Licensed dispensaries only not unlicensed sellers |
| Home possession limit | Up to 2 ounces of cannabis; 1 ounce in public |
| Sharing infused food | Gifting cannabis products to others may have legal limits check current rules |
| Selling infused food | Illegal without a commercial cannabis license |
| Driving after consuming | Illegal delayed edible effects make this especially risky |
| Minors | Keep all cannabis products fully secured away from anyone under 21 |
For current Vermont cannabis home use rules, visit the Vermont Cannabis Control Board or read our guide on Vermont cannabis rules.
New to cannabis infusions? Our guide to how to buy cannabis legally in Vermont covers what to bring and what to expect when purchasing from a dispensary.
Frequently Asked Questions (FAQ)
1. Does cannabutter actually work if I skip decarboxylation?
No or at least, not effectively. Raw cannabis contains THCA, not THC. THCA is not psychoactive. Without decarboxylation, your cannabutter will have little to no effect. The oven step is not optional it is the key that activates the THC.
2. How long does it take for cannabutter edibles to kick in?
Like all edibles, foods made with cannabutter are processed through the digestive system. Effects typically begin 30 to 90 minutes after eating and can take up to 2 hours to fully appear. They may last 4 to 8 hours depending on dose and individual tolerance. Never consume more because you do not feel anything in the first hour this is the most common cause of edible overconsumption.
3. How do I know how strong my cannabutter is?
There is no simple home test for potency. Your best approach is to calculate an estimate based on the THC percentage of your cannabis, apply the 60 to 80 percent transfer rate, and then test a very small amount on yourself before using it in recipes. Start low, wait 2 hours, and adjust from there.
4. Can I use cannabis trim or lower-grade cannabis for cannabutter?
Yes trim, shake, and lower-potency cannabis all work for cannabutter. The final potency will be lower, which can actually be an advantage for beginners. The same process applies. Just be aware that the flavour may be stronger with trim.
5. Where can I buy cannabis for making cannabutter in Vermont?
You must purchase from a licensed Vermont dispensary. Juana’s Garden is located at 188 River St, Montpelier, VT and is open every day from 10am to 7pm. Adults 21+ with a valid photo ID are welcome. No medical card needed. Our staff can help you choose a product with the right THC percentage for your intended use. Browse our full menu or check our latest deals before visiting.
Learn More at Juana’s Garden
Making cannabutter at home is a skill that takes patience and care. The most important factors are decarboxylation, temperature control, and safe dosing. If you take your time and start with small amounts, the process is straightforward.
Explore our full cannabis education library for more guides on cannabis infusions, dosing, health effects, and Vermont law.
Interested in the role of terpenes in cannabis flavour and effects? Our guide on terpenes and aromatic compounds explains how they influence the cannabis experience including in edibles.
Join our free Amigos Rewards program to earn points on every purchase, or check our community events page to see what is happening in Montpelier.
Juana’s Garden | 188 River St, Montpelier, VT 05602 | (802) 917-1009
Open Daily: 10am – 7pm | Adults 21+ Only | Vermont Cannabis Retailer License #RTLR0084
Legal Disclaimer: This content is for educational purposes only. Cannabis has not been evaluated or approved by the FDA. For use by adults 21 years and older only. Keep away from children and pets. Do not use if pregnant or breastfeeding. The effects of cannabis-infused foods may be delayed by two hours or more. It is illegal to drive or operate machinery under the influence of cannabis. Cannabis may not be transported outside the state of Vermont. Vermont Cannabis Control Board Retailer License #RTLR0084.
