How to Make Cannabis Simple Syrup
Cannabis simple syrup combines equal parts sugar and water with decarboxylated cannabis, simmered for 20-30 minutes to create a versatile liquid sweetener with 5-15mg THC per teaspoon. This shelf-stable syrup infuses seamlessly into cocktails, coffee, desserts, and any recipe requiring liquid sweetener.
Cannabis simple syrup opens up endless possibilities for incorporating cannabis into beverages and desserts. Unlike solid edibles, this liquid form dissolves instantly into hot or cold drinks, making it perfect for cocktails, coffee, tea, and dessert sauces. The process is surprisingly straightforward, requiring just three ingredients and basic kitchen equipment.
This guide covers everything from decarboxylation through storage, with precise measurements for consistent potency. Whether you’re crafting cannabis cocktails or sweetening your morning coffee, homemade cannabis simple syrup delivers reliable dosing and exceptional versatility.
Understanding Cannabis Simple Syrup
Cannabis simple syrup is a liquid cannabis edible created by infusing traditional simple syrup (equal parts sugar and water) with activated THC. The sugar acts as both a sweetener and a carrier for cannabinoids, while the water-based solution allows for even distribution throughout beverages and recipes.
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🧪 How Cannabis Dissolves in Simple Syrup
While cannabinoids are typically fat-soluble, the high sugar concentration in simple syrup creates an environment where activated THC can bind effectively. The sugar molecules act as carriers, allowing the cannabinoids to remain suspended in the liquid solution. This process works best when cannabis is finely ground and properly decarboxylated.
⚖️ Potency Expectations
Using 3.5g of 20% THC cannabis in 250ml of finished syrup typically yields 5-8mg THC per teaspoon (5ml). This moderate potency makes the syrup ideal for gradual dosing and mixing into various recipes without overwhelming strength.
| Cannabis Amount | THC % | Total THC (mg) | Per Teaspoon (5ml) | Per Tablespoon (15ml) |
|---|---|---|---|---|
| 3.5g | 15% | 525mg | 10.5mg | 31.5mg |
| 3.5g | 20% | 700mg | 14mg | 42mg |
| 7g | 20% | 1400mg | 28mg | 84mg |
Equipment and Ingredients
🌿 Cannabis Materials
- Cannabis flower — 3.5-7g of quality bud, any strain
- Fine grinder — for consistent particle size Herb Grinder (4-piece Metal)
🍯 Syrup Ingredients
- Caster sugar — 200g (dissolves faster than regular sugar)
- Water — 200ml filtered or tap water
- Vanilla extract — 1 teaspoon (optional, masks cannabis taste)
🔬 Essential Equipment
- Oven thermometer — for accurate decarb temperatures oven thermometer
- Digital scale — precise measurements are crucial Precision Digital Scale (0.01g)
- Heavy-bottomed saucepan — prevents burning small saucepan with lid
- Fine mesh strainer — removes plant material Organic Cheesecloth (1.5m × 1.0m)
- Cheesecloth — for ultra-smooth syrup Organic Cheesecloth (1.5m × 1.0m)
- Glass storage bottles — amber glass protects from light Amber Glass Dropper Bottles 30ml (10-pack)
- Candy thermometer — monitors syrup temperature candy thermometer
Step-by-Step Cannabis Simple Syrup Method
Preheat and Prepare
Preheat your oven to 115°C. Line a baking tray with parchment paper. Verify temperature accuracy with an oven thermometer — many home ovens run hot or cold.
Grind Cannabis
Break cannabis into small pieces and grind using an Herb Grinder (4-piece Metal). Aim for a fine, even consistency — not powder, but smaller than you’d use for smoking. Weigh exactly 3.5g or 7g depending on your desired batch strength.
Decarboxylate Cannabis
Spread ground cannabis evenly on the parchment-lined tray. Bake for 40-45 minutes, stirring every 15 minutes. The cannabis should turn light golden-brown and feel dry to touch. This process activates THC for oral consumption.
Prepare Simple Syrup Base
While cannabis cools, combine 200g caster sugar and 200ml water in your heavy-bottomed saucepan. Heat over medium heat, stirring constantly until sugar completely dissolves — about 3-5 minutes. The liquid should be clear, not cloudy.
Add Cannabis
Reduce heat to low and add the decarboxylated cannabis to the sugar syrup. Stir gently to ensure all plant material is submerged. The mixture will take on a greenish tint and herbal aroma.
Simmer and Infuse
Maintain a gentle simmer for 20-30 minutes, stirring every 5 minutes. Use your candy thermometer to keep temperature between 85-90°C. Never let it boil vigorously, as this can degrade cannabinoids and create bitter flavours.
Strain and Filter
Remove from heat and let cool for 5 minutes. Strain through your Organic Cheesecloth (1.5m × 1.0m) lined with Organic Cheesecloth (1.5m × 1.0m) into a clean bowl. Press the plant material gently with a spoon to extract remaining syrup, but don’t squeeze aggressively.
Final Filtering
For ultra-smooth syrup, strain once more through clean cheesecloth. Add vanilla extract now if using. The finished syrup should be clear amber with no visible plant particles.
Bottle and Store
Transfer to clean Amber Glass Dropper Bottles 30ml (10-pack) or mason jars using a funnel. Label with potency, date, and contents. Store refrigerated for up to 3 months or frozen for 6 months.
THC Per Serving
Troubleshooting Common Issues
| Problem | Cause | Solution | Prevention |
|---|---|---|---|
| Bitter, harsh taste | Overheating during infusion | Add more sugar or vanilla | Keep temperature below 90°C |
| Weak potency | Incomplete decarboxylation | Can’t fix finished syrup | Verify oven temperature, decarb 40-45 minutes |
| Cloudy appearance | Insufficient straining | Re-strain through fresh cheesecloth | Double-strain all batches |
| Crystalized sugar | Temperature too high | Reheat gently with 1-2 tbsp water | Use candy thermometer, avoid boiling |
| Syrup too thin | Insufficient cooking time | Reheat and simmer 5-10 more minutes | Cook until it coats a spoon |
Using Cannabis Simple Syrup
🍸 Cocktails and Mocktails
Cannabis simple syrup dissolves perfectly in both hot and cold beverages. Start with 1 teaspoon (5mg) in cocktails, adjusting to taste and desired effect. The syrup pairs particularly well with citrus-based drinks, where the cannabis flavour complements rather than competes.
☕ Hot Beverages
Add to coffee, tea, or hot chocolate for an elevated warm beverage experience. The liquid form means no grittiness or separation that sometimes occurs with cannabis oils. Start with 1/2 teaspoon and increase gradually.
🍨 Dessert Applications
Drizzle over ice cream, pancakes, or fruit salads. Use as a base for cannabis-infused sorbets or granitas. The syrup can replace regular simple syrup in any dessert recipe requiring liquid sweetener.
What Does Cannabis Simple Syrup Taste Like?
Cannabis simple syrup has a distinctive flavour profile that blends the sweetness of traditional simple syrup with herbal, earthy cannabis notes. The base taste is rich and sugary — identical to regular simple syrup — but with a layered botanical undertone that ranges from mildly grassy to pleasantly herbal depending on the strain used and how thoroughly you strain the finished product.
🌿 Base Flavour Profile
The dominant flavour is sweet, as you’d expect from a sugar syrup. Behind the sweetness, you’ll notice a warm, slightly herbaceous note similar to green tea or chamomile. Some batches carry a subtle earthiness reminiscent of honey or molasses, particularly when made with indica-dominant strains. The overall effect is a complex sweetener that adds depth rather than just sugar.
💨 How Strain Choice Affects Flavour
Different cannabis strains bring their own terpene profiles to the syrup, which noticeably affects the final taste. Citrus-forward strains (high in limonene) produce a bright, almost zesty syrup that pairs beautifully with cocktails and lemonade. Strains with pinene give a fresh, pine-like quality that works well in gin-based drinks. Earthy, myrcene-heavy strains create a deeper, more herbaceous syrup that complements coffee, hot chocolate, and chai. If flavour pairing matters to you, consider the terpene profile of your chosen strain before you start.
🍵 Managing and Enhancing the Taste
If you find the cannabis flavour too strong, there are several ways to soften it. Adding a teaspoon of vanilla extract during the final filtering stage smooths out any sharpness. A squeeze of fresh lemon juice brightens the syrup and balances the earthiness. For cocktail-focused batches, try infusing a few fresh mint leaves or a strip of citrus peel during the last five minutes of simmering — this adds complementary flavours that harmonise with the cannabis notes rather than fighting them. Double-straining through cheesecloth also reduces the vegetal taste by removing more plant particles.
In drinks, the cannabis flavour is typically subtle when dosed at 1 teaspoon per serve. In stronger doses or simpler drinks like lemonade, the herbal notes become more prominent — which many people come to enjoy as part of the experience.
Storage and Shelf Life
❄️ Refrigeration
Store cannabis simple syrup in the refrigerator in airtight glass containers. Properly made syrup maintains potency and quality for up to 3 months. The high sugar content naturally preserves the syrup and prevents bacterial growth.
🥶 Freezing for Long-term Storage
Cannabis simple syrup freezes well for up to 6 months. The high sugar content prevents it from freezing solid, maintaining a slushy consistency that’s easy to portion. Freeze in ice cube trays for pre-measured doses.
🏷️ Labelling Requirements
Always label containers with preparation date, estimated potency per serving, and clear cannabis warnings. Include storage instructions and expiration date. This is crucial for household safety and dosage tracking.
Consistent Dosing
Start with 1 teaspoon (5-8mg) and wait 2 hours before taking more. The liquid form allows for precise measurement and gradual dose titration.
Temperature Control
Keep infusion temperature between 85-90°C. Higher temperatures can degrade cannabinoids and create bitter flavours that overpower the sweetness.
Mixing Technique
Always stir gently during infusion to prevent cannabis from sticking to the bottom of the pan. Vigorous stirring can make the syrup cloudy.
Timing Matters
Don’t rush the infusion process. The full 20-30 minute simmer allows maximum cannabinoid extraction while developing smooth flavour.
Portion Control
Freeze in ice cube trays for pre-measured doses. Each standard ice cube holds about 2 tablespoons, making it easy to portion servings.
Strain Twice
Double-straining through cheesecloth eliminates all plant particles, creating a professional-quality syrup that won’t clog dropper bottles.
Safe Cannabis Simple Syrup Preparation
Always decarboxylate cannabis in a well-ventilated area and store finished syrup in clearly labelled, child-resistant containers. Never leave cannabis syrup unattended during preparation, and keep all equipment and ingredients away from children and pets. The liquid form makes accidental consumption more likely than solid edibles. If you experience cannabis overdose symptoms, remain calm, stay hydrated, and contact Poisons Information Centre on 13 11 26 for guidance.
Frequently Asked Questions
Effects typically begin 30-90 minutes after consumption, similar to other edibles. The liquid form may absorb slightly faster than solid edibles, but individual metabolism varies significantly. Always wait at least 2 hours before taking additional doses.
Yes, but adjust quantities accordingly. Trim typically contains 5-10% THC compared to 15-25% in flower, so you’ll need 2-3 times more material. The process remains identical, but expect a more vegetal flavour.
Bitterness usually results from overheating during infusion or using too much plant material. Keep temperature below 90°C and consider using 2.5g cannabis instead of 3.5g for your next batch. Adding extra vanilla can help mask residual cannabis flavours.
Traditional simple syrup requires sugar for proper cannabinoid binding. However, you can experiment with liquid stevia or monk fruit after the initial sugar infusion, though this may affect potency distribution and shelf life.
Without lab testing, estimate conservatively at 15% THC for quality flower. This means 3.5g contains roughly 525mg THC total, or about 10mg per teaspoon of finished syrup. Start with half-doses until you understand the actual potency.
Properly made syrup with adequate sugar content won’t separate, but can develop mould if contaminated. Signs of spoilage include off odours, visible mould, or changes in colour. Refrigerated syrup typically lasts 3 months when stored in clean containers.
Yes, a light green or amber colour is normal from chlorophyll extraction. The intensity depends on the cannabis strain and how finely it’s ground. The colour doesn’t affect potency, and double-straining can reduce it slightly.
Cannabis simple syrup works well in recipes that call for liquid sweeteners, but may not substitute perfectly for granulated sugar in baking. It’s excellent for glazes, frostings, and beverage-based desserts where liquid consistency is desired.
Cannabis simple syrup tastes like traditional simple syrup — sweet and smooth — with a layered herbal, slightly earthy undertone from the cannabis. The flavour intensity depends on your strain choice, how finely you grind the flower, and how well you strain the finished syrup. Citrus-forward strains (high in limonene) produce a bright, zesty syrup, while earthy indica strains give a deeper, more herbaceous flavour. At standard doses of 1 teaspoon per drink, the cannabis taste is subtle and blends well with cocktails, coffee, and tea. Adding vanilla extract or fresh citrus peel during preparation can further soften the herbal notes.
Essential Cannabis Simple Syrup Equipment
Precision decarboxylation device — activates THC perfectly every time with zero guesswork.
View on Amazon → Organic Cheesecloth (1.5m × 1.0m)Certified organic, unbleached cheesecloth for straining cannabutter and infused oils cleanly.
View on Amazon → Lecithin Sunflower LiquidLecithin Sunflower Liquid — recommended for cannabis cooking.
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