Guava Basil Smash

My basil was taking over the garden and I had a jar of guava syrup in the fridge that needed to be used since I’d already defrosted it once. I wasn’t planning a new recipe. I was just trying to deal with both problems at once.

Two shakes later (ok, more than two shakes on this one), and this drink found its way into the hands of my expert taste testers (AKA my neighbors who don’t mind trying out my cocktails in exchange for free booze).

My Guava Basil Smash is just four ingredients: gin, guava, basil, and lemon, all things that I usually have on hand, especially in the summer months when my herb garden is going crazy.

What Is a Smash?

A smash is one of the oldest cocktail formats around: fresh herbs or fruit, a spirit, citrus, and a sweetener. The format dates back to the 1800s, and the Gin Basil Smash became a modern classic after bartender Jörg Meyer created it in Hamburg in 2008.

He originally called it the “Gin Pesto,” which honestly makes sense once you taste it, unless you add guava that is.

In this version, I skip the muddling step entirely. Using a guava simple syrup instead of muddled fruit gives you more consistent flavor and a cleaner drink. The basil is shaken with everything else and double-strained, so you get the flavor without herb bits floating around in your glass.

Or at least not too many green bits. Some always break off, but that’s the beauty of using fresh ingredients.

Why Guava and Basil Work Together

Guava has a floral, slightly funky sweetness that doesn’t taste like any other fruit (but oddly smells like passion fruit). It’s not tropical the way pineapple is, as it’s more delicate, a little more floral, with a hint of tartness, which is why it’s perfect in a syrup.

Sweet Genovese basil (grab seeds to grow your own) has a soft peppery quality that doesn’t compete with the guava. It rounds it out. Lemon juice keeps the whole thing from going too sweet, and gives it a crisp, citrus edge.

London Dry Gin works well as it’s already a little botanical, but doesn’t lean in one direction too much, so the guava and basil can still shine.

How to Make Guava Syrup

Learn how to make your own guava syrup from fresh fruit HERE.

If you’ve got good guava juice (100% juice, not from concentrate), this takes about 10 minutes.

Combine 1 cup guava juice with 1 cup sugar in a small saucepan over medium heat. Stir until the sugar dissolves, let it come to a gentle simmer, and cook for 5 to 7 minutes until slightly thickened. Cool completely before using.

Store it in a sealed jar in the fridge for up to two weeks, or freeze it in small glass mason jars for a few months. I keep a batch in the freezer almost year-round.

Check out a full lineup of fruit and herb simple syrups organized by season

Try a Thai Basil Variation

The standard recipe uses sweet basil, but Thai basil takes this in a slightly different direction.

Thai basil has an anise quality with a spicier edge. Shaken with guava, the drink leans more complex and tropical, like something you’d order at a Southeast Asian-inspired bar. It’s not subtle, though, so use it gently.

I grow both types of basil in my herb garden and swap between them as they come up.

Start with sweet basil so you have a good idea of what it tastes like, then try Thai basil and see which you prefer.

Mocktail Option: Guava Basil Lemonade

Skip the gin, stick with all of the other ingredients, and top with sparkling water.

What you get is a basil lemonade with a little hit of guava.

If you want something closer to the original cocktail experience, non-alcoholic gin offers the botanical notes that sparkling water lacks.

Garnish

A single basil leaf works well and chances are you have it on hand since you are making a basil smash.

Clap a leaf between your palms before dropping it into the glass. That pressure releases the aromatic oils, and you get a burst of basil scent when you sip.

A lemon wheel or thin lemon twist on the rim also works well. For the Thai basil version, a thin fresh chili slice on the rim matches the flavor shift.

For more finishing ideas, check out my cocktail garnishes guide.

Tools That Help

You don’t need a lot for this drink, but a few things make a difference.

A Boston shaker gives you better control than a cobbler shaker — better seal, faster chill, easier to strain.

A fine-mesh strainer is essential when shaking with whole basil leaves. Double-strain through the Hawthorne strainer on your shaker and the fine-mesh strainer over the glass and you’ll get a completely clear drink.

For glassware, use a lowball/rocks glass, which is short and wide, so the ice fits properly.

My Amazon shop has everything I use at home if you want to see the full setup.

Cocktails That Use Guava Syrup

Guava Basil Smash
Guava Spritz

More Gin and Herb Cocktails to Try

If you’re into herbal flavors, these cocktail recipes are worth making next:

Basil Gin Smash — the classic version with just basil and no guava
Herb Garden Spritz — great for when you want something lighter and bubbly
Emerald Sour — herbal gin sour with a bright green color
Juniper Cranberry Gin Sour — for when you want something tarter and more seasonal

And if you want to chat with a friend while you sip, tune into the Twist Happy Hour podcast. New episodes go up regularly.