How to Make Cannabis-Infused Cooking Oil at Home: A Complete Guide

Cannabis-infused cooking oil is the foundation of homemade edibles. Whether you want to make brownies, salad dressings, pasta sauces, or sautéed vegetables with a gentle therapeutic effect, the process starts with a quality infused oil. And while dispensary shelves are lined with pre-made options, making your own at home gives you complete control over potency, flavor, strain selection, and cost.

This guide walks through every step of the process, from choosing your starting materials to calculating doses for the finished product. If you have a kitchen, a thermometer, and some patience, you can produce a clean, consistent cannabis oil that rivals anything commercially available.

What You Will Need

Ingredients:

• 7–14 grams of cannabis flower (or equivalent trim)
• 1 cup (237 ml) of cooking oil — coconut oil, olive oil, or MCT oil are the best choices

Equipment:

• Oven and baking sheet
• Parchment paper
• Oven thermometer (critical for decarboxylation accuracy)
• Saucepan, slow cooker, or double boiler
• Kitchen thermometer (digital probe or candy thermometer)
• Fine mesh strainer or cheesecloth
• Glass jar with lid for storage
• Optional: lecithin (sunflower or soy) for improved bioavailability

Why Coconut Oil? Coconut oil is the most popular choice for cannabis infusion because of its high saturated fat content (about 82%). Cannabinoids are fat-soluble, and saturated fats bind them most effectively. MCT oil, a fractionated coconut oil, works equally well and stays liquid at room temperature, which is convenient for dosing. Olive oil is a solid alternative — slightly less efficient at binding cannabinoids but excellent for savory applications.

Step 1: Decarboxylation

This is the most important step, and skipping it is the single most common mistake home cooks make.

Raw cannabis contains THCA and CBDA — the acidic precursor forms of THC and CBD. These compounds are not psychoactive (in the case of THCA) and have reduced bioavailability. Decarboxylation uses heat to remove a carboxyl group from these molecules, converting them into the active forms your body can use.

How to decarboxylate:

1. Preheat your oven to 240°F (115°C). Use an oven thermometer to verify — most home ovens are inaccurate by 10–25°F, and temperature matters here.
2. Break your cannabis into pea-sized pieces. Do not grind it to a fine powder — this creates plant material that is harder to strain and can add bitterness.
3. Spread the pieces evenly across a parchment-lined baking sheet.
4. Bake for 40 minutes, gently shaking the tray at the 20-minute mark.
5. The cannabis should turn from green to a light golden-brown color. It will smell strongly — ventilation is recommended.

Temperature and timing matter. Below 220°F, decarboxylation is too slow. Above 300°F, you risk destroying THC by converting it to CBN (a cannabinoid with sedative but not psychoactive properties) or simply volatilizing it off. The 240°F/40-minute window is the established sweet spot validated by multiple laboratory analyses.

If you are working with CBD-dominant flower, increase the time to 50–60 minutes, as CBDA has a slightly higher activation energy for decarboxylation than THCA.

Step 2: Choose Your Infusion Method

There are three reliable methods for infusing oil. All of them work — the differences are in convenience and temperature control.

Method A: Stovetop (Double Boiler)

This is the most hands-on approach but gives you the best real-time temperature control.

1. Set up a double boiler: place a heat-safe bowl over a saucepan of gently simmering water.
2. Add the oil and decarboxylated cannabis to the bowl.
3. Maintain the oil temperature between 160°F and 200°F (71–93°C) for 2–3 hours, stirring every 15–20 minutes.
4. Never let the oil exceed 200°F. Use your thermometer frequently.

Method B: Slow Cooker

The easiest method with the most consistent temperature.

1. Combine oil and decarboxylated cannabis in a slow cooker.
2. Set to the LOW setting (which typically holds between 160–200°F).
3. Cook for 4–6 hours, stirring occasionally.
4. Check the temperature periodically to confirm it stays in range.

Method C: Mason Jar (Water Bath)

This method minimizes odor and is very precise.

1. Combine oil and decarboxylated cannabis in a mason jar. Seal the lid finger-tight (not fully torqued — pressure needs to escape).
2. Place the jar on a folded kitchen towel in a pot of water (the towel prevents the jar from cracking on direct heat).
3. Bring the water to a low simmer and maintain for 3–4 hours.
4. The water temperature should stay around 185°F (85°C).

Adding lecithin: If you want to boost the bioavailability and consistency of your oil, add 1 teaspoon of sunflower lecithin per cup of oil at the start of the infusion. Lecithin is an emulsifier that helps cannabinoids bind to fats more uniformly and may improve absorption during digestion.

Step 3: Strain and Store

Once your infusion is complete:

1. Set a fine mesh strainer or cheesecloth over your storage jar.
2. Slowly pour the oil through, allowing it to drip naturally.
3. Do not squeeze the cheesecloth. Squeezing pushes chlorophyll, plant waxes, and fine particles into the oil, creating a bitter, harsh taste. You will lose a small amount of oil by not squeezing — accept this tradeoff.
4. Discard the spent plant material.
5. Seal the jar and label it with the date, strain used, and estimated potency.

Storage: Cannabis oil should be stored in a cool, dark place. Refrigerated, it will last 2–3 months. Frozen, it can last 6 months or more. Exposure to light, heat, and air degrades cannabinoids over time. Dark glass jars are ideal.

Step 4: Calculate Your Dose

This is where many home cooks go wrong. Without lab testing, dosing is approximate — but you can get reasonably close with basic math.

The formula:

1. Start with the THC percentage of your flower. For example, flower tested at 20% THC contains approximately 200 mg of THC per gram.
2. Multiply by the amount of flower used. With 7 grams at 20% THC: 7 × 200 = 1,400 mg total THC.
3. Account for losses. Decarboxylation and infusion are not 100% efficient. A realistic extraction efficiency for home methods is 60–80%. Using 70% as a conservative estimate: 1,400 × 0.70 = 980 mg THC in your finished oil.
4. Divide by volume. If you started with 1 cup (approximately 16 tablespoons) of oil: 980 ÷ 16 = approximately 61 mg THC per tablespoon, or about 20 mg per teaspoon.

For context: A standard dispensary edible dose is 5–10 mg of THC. A teaspoon of oil at the potency calculated above would contain roughly 20 mg — a moderate-to-strong dose for most people. Adjust your starting flower amount up or down to hit your target potency.

If you are new to edibles, start with a very low dose — 2.5 to 5 mg — and wait at least 2 hours before consuming more. Edibles take significantly longer to take effect than inhaled cannabis and can be much more intense. Understanding how your body processes cannabis can help you anticipate the experience.

Tips for Better Results

Choose quality starting material. The quality of your infusion is directly determined by the quality of your cannabis. Well-cured, terpene-rich flower produces better-tasting oil. Trim and shake can work but will be less potent per gram and may produce a grassier flavor.

Watch your temperature. This cannot be overstated. Too much heat destroys cannabinoids and terpenes. Keep infusion temperatures below 200°F at all times. A cheap digital kitchen thermometer is the best $15 investment you can make.

Strain selection matters. Different strains produce different edible experiences, driven by their unique cannabinoid and terpene profiles. A high-myrcene indica strain will produce a more sedative oil, while a limonene-rich sativa may yield a more uplifting effect. Our guide to the best strains of 2026 can help you choose.

Consistency requires uniformity. Stir your oil thoroughly after infusion and before each use. Cannabinoids can settle unevenly, especially in coconut oil that solidifies at room temperature. Warming and stirring before portioning ensures consistent dosing.

What to Make With Your Oil

Cannabis-infused oil is incredibly versatile. Here are some starting points:

• Baked goods: Replace the fat in any recipe with your infused oil 1:1. Brownies, cookies, muffins, and banana bread all work well.
• Salad dressings: Whisk infused olive oil with vinegar, mustard, and herbs for a low-effort edible.
• Sautéed vegetables: Cook at low-to-medium heat to preserve cannabinoids.
• Smoothies: Blend a measured amount of infused MCT or coconut oil into your morning smoothie.
• Capsules: Fill empty gel capsules with infused MCT oil for a precise, tasteless dosing method.

The key rule for cooking with cannabis oil is to avoid high heat. Do not use it for deep frying or high-temperature searing. Cannabinoids begin to degrade above 320°F (160°C), so use your infused oil as a finishing oil or in recipes with lower cooking temperatures.

Safety and Legal Considerations

Cannabis edibles are legal to produce at home in most states with adult-use cannabis laws, but check your state’s specific regulations. Some states limit the amount of cannabis or THC you can possess at any time, which affects how much oil you can make in a batch.

Always label homemade cannabis products clearly and store them where children and pets cannot access them. Edibles look and taste like normal food, and accidental ingestion by children is a real and preventable risk.

For those curious about how commercial cannabis gummies are manufactured at scale, the precision and regulatory requirements are considerable — but the foundational chemistry is the same as what you are doing in your kitchen.

Making cannabis oil at home is a straightforward process that rewards patience and precision. With clean starting material, careful temperature control, and honest dose calculations, you can produce a kitchen staple that opens up an entire world of homemade edible possibilities.