I started making Basil Simple Syrup Recipe on a whim one summer when my basil plant was growing faster than I could use it, and it turned into one of those recipes I now keep in my fridge on repeat. It only takes three ingredients and a saucepan, yet it turns any lemonade, iced tea, or cocktail into something that tastes like it came from a craft cocktail bar.
The basil flavor is fresh, slightly peppery, and a little sweet, which makes it one of the most versatile syrups I’ve ever made. Once you try it, you’ll probably start looking for excuses to use it, the way I do. Let me walk you through exactly how I make it at home.
Cooking Time
- Prep Time: 5 minutes
- Cooking Time: 5 minutes
- Total Time: 40 minutes (includes 30 minutes of steeping time)
Ingredients
- 1 cup granulated white sugar – the base sweetener that dissolves into the water to form the syrup
- 1 cup water – helps the sugar dissolve evenly and gives the syrup its pourable consistency
- 1 cup fresh basil leaves, packed – use fresh, not dried, since dried basil won’t release the same bright flavor
Note: This recipe makes about 1½ cups of syrup, enough for several drinks or servings.
Equipment You Need
- Small saucepan – for heating the sugar and water together
- Whisk – to stir the mixture so the sugar dissolves smoothly
- Fine-mesh sieve or strainer – to separate the basil leaves from the finished syrup
- Fork or spoon – to press the basil leaves down so they stay submerged while infusing
- Airtight container or glass jar – for storing the syrup once it’s cooled
How to Make a Basil Simple Syrup Recipe?
This recipe comes together in two simple stages: cooking the syrup base and letting the basil infuse into it. Neither step is complicated, but a little patience during the infusing stage makes a real difference in flavor. Here’s exactly how I do it every time.
Step 1: Dissolve the Sugar
I start by combining the sugar and water in a small saucepan and setting it over medium heat. I whisk it constantly so the sugar doesn’t clump or scorch on the bottom of the pan. Once the mixture comes to a gentle simmer and the sugar has fully dissolved, I turn off the heat right away.
Step 2: Add the Basil Leaves
Next, I drop the fresh basil leaves straight into the warm syrup. I use a fork to gently press them down until they’re fully submerged, since any leaves poking out of the liquid won’t infuse properly. This is the step that gives the syrup its signature herbal flavor.
Step 3: Let It Steep
I let the basil sit in the syrup for about 30 minutes off the heat. This resting time is what pulls all that fresh basil flavor into the liquid, so I try not to rush it even when I’m eager to use the syrup right away.
Step 4: Strain the Syrup
Once the steeping time is up, I pour the syrup through a fine-mesh sieve into a clean container, pressing the basil leaves against the strainer with the back of a spoon to squeeze out every last bit of flavor before discarding the leaves.
Step 5: Cool and Store
Finally, I let the syrup cool completely at room temperature before transferring it to an airtight container. Once it’s cool, it’s ready to use in any drink I like, or it goes straight into the fridge for later.
Additional Tips for Making This Recipe Better
I’ve made this syrup more times than I can count, and a few small habits have made it consistently better for me.
- I always pick basil leaves that look bright green and perky, since wilted leaves give a duller flavor.
- I turn the heat off the second the sugar dissolves, because overcooking the syrup can make it too thick once it cools.
- I bruise the basil leaves lightly with my hands before adding them, which helps release more of their essential oils.
- I taste the syrup after straining, and if I want a stronger basil flavor, I steep a fresh batch of leaves in the same syrup for another 10 minutes.
- I store the syrup in a glass jar rather than plastic, since I find it keeps the flavor cleaner over time.
Common Mistakes to Avoid
Over the years I’ve picked up on a few slip-ups that can throw off this simple recipe.
- Using frozen or dried basil: I only use fresh basil, since frozen leaves turn mushy and dried basil doesn’t infuse the same way.
- Skipping the submersion step: If I don’t press the basil leaves fully into the syrup, parts of them never infuse, and the flavor ends up weaker.
- Steeping basil while the syrup is still boiling: I always turn off the heat first, because boiling basil too long can make the syrup taste bitter or grassy.
- Not straining thoroughly: I press the leaves firmly against the sieve, otherwise I lose a good amount of syrup along with the discarded basil.
- Storing it warm: I never seal the syrup in a container while it’s still warm, since trapped heat can cause condensation and shorten its shelf life.
How to Serve Basil Simple Syrup?
I love stirring this syrup into iced tea or lemonade for an instant flavor upgrade, but it really shines in cocktails and mocktails too. A splash of basil simple syrup mixed with gin, lime juice, and soda water makes a refreshing summer drink, and it works just as well in a virgin version with sparkling water and a squeeze of citrus.
For presentation, I like to drop a fresh basil leaf or a thin lemon wheel into the glass, since it hints at the flavor before the first sip. Drizzling a little over fresh berries or a fruit salad is another way I like to use any extra syrup.
Variations
- Lemon basil simple syrup: I add a few strips of lemon zest to the saucepan along with the basil for a citrusy twist.
- Lime basil simple syrup: Swapping in lime zest instead of lemon gives the syrup a slightly sharper, tropical note.
- Thai basil simple syrup: I use Thai basil in place of sweet basil for a more anise-like, peppery flavor.
- Sugar-free version: I’ve substituted the granulated sugar with a monk fruit or erythritol blend for a lower-calorie syrup.
- Honey basil syrup: Replacing half the sugar with honey gives the syrup a warmer, slightly floral sweetness.
- Mint basil blend: I mix in a handful of fresh mint leaves along with the basil for a cooler, more complex flavor.
Nutritional Information
Here’s a general idea of what one tablespoon of this syrup contains, though exact values can vary slightly.
- Calories: about 40
- Protein: 0g
- Carbohydrates: about 10g
- Fat: 0g
Make Ahead and Storage
This syrup is easy to make ahead, since it actually needs to cool completely before use anyway. I usually make a batch a day or two before I need it so it’s ready to go.
Once cooled, I store it in an airtight container or jar in the refrigerator, where it stays fresh for up to one month. I always give the jar a quick sniff and a look before using it toward the end of that window, just to be safe.
I haven’t frozen this syrup myself, but since it’s mostly sugar and water, it should freeze well in an ice cube tray for longer storage, letting me pop out a cube whenever I need a small amount.
Why You’ll Love This Recipe?
This basil simple syrup has become a staple in my kitchen for a few clear reasons.
- It’s incredibly simple to make: With just three ingredients and one saucepan, I can have a batch ready in under an hour, most of which is hands-off steeping time.
- It’s endlessly versatile: I use it in cocktails, mocktails, teas, lemonades, and even drizzled over fruit, so one batch stretches across a lot of different uses.
- It’s a great way to use up extra basil: Whenever my basil plant gets ahead of me, this syrup is my go-to way to use the leaves before they wilt.
- It’s easy to customize: Between the lemon, lime, and Thai basil variations, I can change up the flavor depending on what I’m in the mood for.
- It keeps well: Since it lasts up to a month in the fridge, I always have a jar on hand for whenever I want to make a quick drink feel special.
FAQs
What are some good basil syrup cocktails?
Basil simple syrup works well in gin-based cocktails, basil smashes, and citrus-forward drinks like a basil gimlet. I like pairing it with gin or vodka, lime juice, and a splash of soda water.
How do I make a basil simple syrup cocktail at home?
I mix about an ounce of the syrup with my spirit of choice, fresh citrus juice, and ice, then shake or stir and strain into a glass. It’s an easy way to add herbal sweetness to almost any cocktail.
What are some basil simple syrup uses besides cocktails?
I use it in lemonade, iced tea, sparkling water, drizzled over fruit, or even stirred into a vinaigrette for a subtle herbal sweetness.
Can I use this syrup in a basil simple syrup mocktail?
Yes, I mix it with sparkling water, lime juice, and a few muddled berries for a refreshing non-alcoholic drink that still feels festive.
How is a Thai basil simple syrup recipe different from this one?
The method stays the same, but I swap in Thai basil leaves instead of sweet basil, which gives the syrup a slightly spicier, more anise-forward flavor.
What is the Morgenthaler basil syrup method?
It follows a similar approach of steeping fresh basil in hot simple syrup, though some versions use a quicker steep time or a slightly different sugar ratio. I’ve found my method gives a well-balanced, fresh flavor either way.
How do I make a lemon basil simple syrup recipe?
I add a few strips of lemon zest to the saucepan along with the basil while it steeps, which infuses a bright citrus note into the syrup.
How do I make a lime basil simple syrup recipe?
I follow the same steps but add lime zest instead of lemon, which gives the syrup a slightly sharper, more tropical edge.
Is this similar to a mint simple syrup recipe?
The method is nearly identical, so if I want a minty version instead, I simply swap the basil for fresh mint leaves using the same steeping time.
Basil Simple Syrup Recipe
Ingredients
Method
- I start by combining the sugar and water in a small saucepan and setting it over medium heat. I whisk it constantly so the sugar doesn’t clump or scorch on the bottom of the pan. Once the mixture comes to a gentle simmer and the sugar has fully dissolved, I turn off the heat right away.
- Next, I drop the fresh basil leaves straight into the warm syrup. I use a fork to gently press them down until they’re fully submerged, since any leaves poking out of the liquid won’t infuse properly. This is the step that gives the syrup its signature herbal flavor.
- I let the basil sit in the syrup for about 30 minutes off the heat. This resting time is what pulls all that fresh basil flavor into the liquid, so I try not to rush it even when I’m eager to use the syrup right away.
- Once the steeping time is up, I pour the syrup through a fine-mesh sieve into a clean container, pressing the basil leaves against the strainer with the back of a spoon to squeeze out every last bit of flavor before discarding the leaves.
- Finally, I let the syrup cool completely at room temperature before transferring it to an airtight container. Once it’s cool, it’s ready to use in any drink I like, or it goes straight into the fridge for later.
Notes
- I always pick basil leaves that look bright green and perky, since wilted leaves give a duller flavor.
- I turn the heat off the second the sugar dissolves, because overcooking the syrup can make it too thick once it cools.
- I bruise the basil leaves lightly with my hands before adding them, which helps release more of their essential oils.
- I taste the syrup after straining, and if I want a stronger basil flavor, I steep a fresh batch of leaves in the same syrup for another 10 minutes.
- I store the syrup in a glass jar rather than plastic, since I find it keeps the flavor cleaner over time.
