THC Syrup: A Simple Recipe

THC Syrup: A Simple Recipe

THC Syrup

Cannabis has been coming back into its rightful and honorable place as sacred plant medicine, after having been outlawed for most of the 20th century in most of the world. It has begun its slide towards decriminalization and/or full legalization (9 states plus DC and counting!) in earnest. To celebrate, we want to provide you with a lovely suggestion on how to enjoy your probiotics and cannabinoids at the same time!

This cannabis-infused syrup contains psychoactive THC, CBD, plus a host of other amazing cannabinoid molecules all fashioned by this miraculous medicinal plant. It is designed to be used as a sweetener for a cannabis-infused kombucha! You could also use it in cocktails, as a way to relax with a cup of hot tea, or really any recipe calling for sugar or simple syrup.

You can use almost any bud, from top-shelf flower to old shake. Edibles like this recipe are a great way to use trim (leaves and stems other than the flower, which still have a good amount of trichomes, the sticky resin which contain the active ingredients). Near zero waste! The syrup I made used some old trim for which I did not know the THC content, so I had to estimate that.

You can customize the potency of the syrup to your liking. Try out our handy canna-calculator below.

You can find out about Weed Candy here!

Notes & Assumptions

  • Cannabis is legal in your state or jurisdiction, and/or it is legal for you to consume (you are over 21 and/or have a medical registration card to legally possess).
  • To maximize the effects, decarboxylate cannabis plant matter first (by low roasting) before making edibles with it. This converts THC-A into THC and increases the psychoactive effect significantly. Decarboxylation is not necessary if you are beginning with oil or concentrate.
  • It is believed that extraction efficiency (the rate at which cannabinoids and terpenoids are retained) is 50% for fat-based infusions (THC levels drop from plant form to syrup by 50% during the infusion process). We hold the same assumption for this syrup-based infusion. Calculations incorporate this assumption.

What is THC Syrup?

THC Syrup

This liquid substance is super sweet and a fantastic cannabis treat. It is the secret ingredient in the best cold homemade cannabis beverages. THC syrup is essentially simple syrup. Simple syrup is how bartenders typically add sweetness to beverages. It is a 50/50 ratio of sugar and water. THC syrup is the exact same, except we use cannabis sugar! Heat your THC sugar and water according to the recipe and you’re all set.

You can find out A Lazy Guide to Making Homemade Weed Edibles here!

How can I use my cannabis infusion?

Excitingly, your cannabis infused syrup can is a great addition to many weed edibles. This includes cocktails, coffee, and many drink recipes. We find it so much easier to swirl in a prepared translucent THC liquid, than it is to add cannabis sugar directly. Weed Syrup has a multitude of uses and is a great addition to tea, porridge and anything that could do with a little sweetness. You will find many uses for this weed infusion in your cooking. Add this cannabis ingredient to create weed sorbets, cannabis candied fruit, and more. In addition, it is easy to correctly dose with THC Syrup. Simply add a few drops to your cannabis edibles.

Can I customize this infusion?

For your basic Cannabis syrup recipe, you only need two ingredients: water and cannabis sugar. The most common ratio for this weed infused liquid is equal parts water to sugar. This doesn’t mean that you can’t modify this weed infusion. Make the syrup more rich by using additional cannabis sugar. Make your THC syrup lighter by using less sugar. You can even play around when with the type of sugar you add to this weed solution. Swapping white sugar for brown sugar will make a rich, almost caramel-like syrup. You can also flavor your syrup with lemon zest, strawberry or vanilla extract.

How to make cannabis-infused maple syrup

Maple syrup is not just a delicious addition at the breakfast table, it’s also an excellent natural sweetener in smoothies and baked goods, not to mention savoury recipes like glazed salmon, roasted root veggies, and vinaigrettes.


  • 1 cup of maple syrup
  • 3.5 grams of decarboxylated cannabis

The essential (and often missed) first step: Decarboxylating the cannabis

Before making your infusion, you’ll need to decarboxylate, or “decarb”, the cannabis flower you’re working with. Skipping this step will result in a weak or inactive finished product. Here’s why: Cannabis buds produce a non-intoxicating acidic cannabinoid called THCA. When we smoke or vaporize cannabis, the heat converts THCA into THC, the molecule that delivers euphoric effects. If preparing CBD edibles, this same process should be applied.

Directions for making a cannabis infusion with maple syrup

  1. Decarb the cannabis. Preheat your oven to 245ºF. Place cannabis buds on a non-stick, oven-safe tray. Cover the tray with parchment paper to prevent sticking. Insert the tray into the oven and set a timer for 30-40 minutes. Older, drier cannabis may require less time. (Tip: you can also set your oven to 300ºF and heat for 10 to 18 minutes, although low-and-slow is the recommended approach when decarbing to better preserve the cannabinoids.) Every 10 minutes, gently mix the buds with a light shake of the tray to expose the surface area of the buds equally.
  2. Combine the cannabis and maple syrup in a double boiler to apply gentle heat on the stove top.
  3. Simmer. Maintain low heat and let the mixture simmer for at least 40 minutes. The mixture should never come to a full boil.
  4. Strain the maple syrup. Set a funnel on top of a jar and line it with cheesecloth. Once the maple syrup has cooled off, pour it over the cheesecloth funnel and allow it to strain freely. (Tip: Squeezing the cheesecloth may push more bad-tasting plant material through).
  5. Refrigerate maple syrup for 15-30 days.
  6. Dose carefully. Refer to dosing information below before adding your maple syrup to any snacks, dishes, or desserts.
THC Syrup

Tips for dosing cannabis infusions

The potency of your infusions depends on many factors, from how long and hot it was cooked to the potency of your starting material. To test the potency of your finished product, try spreading ¼ or ½ teaspoon on a snack and see how that dose affects you after an hour. Decrease or increase dose as desired. You can then use this personalized “standard” dose as a baseline for your recipes.

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