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About Kiwi Syrup
Kiwi syrup is a bright green mixer that highlights the fruit’s naturally sweet-tart flavor and tropical freshness. It’s considered a flavored simple syrup, which is essentially just sugar dissolved in liquid, but with fruit juice that gives it vibrant color and a lively, tangy character without being overly sweet.
Like classic simple syrup, it’s easy to make at home too. In this recipe, fresh kiwi juice and sugar are gently combined using a sous vide method until the sugar fully dissolves and the flavors meld together, preserving the fruit’s vivid color and crisp, tropical taste. And once finished, this refreshing syrup pairs beautifully with rum, gin, tequila, or vodka, and it’s especially good in a Mojito, Margarita, spritz, or sparkling cocktail—any drink that could use a splash of bright, tropical flavor and a pop of natural green color.
Cocktails I Made with Kiwi Syrup
Kiwi Syrup Ingredients
To make this syrup, you’ll need the following ingredients:
Pure Cane Granulated Sugar: This is a refined sweetener made from sugarcane juice that’s been crystallized and dried into uniform, free-flowing white crystals.
Kiwi Juice: This is the tart-sweet liquid extracted from fresh kiwi fruit that has a vibrant green color and tropical, slightly acidic flavor.
Brands I Used
How to Make Kiwi Syrup
There are a couple of ways to make kiwi syrup, and which one you choose depends on the tools you have and how hands-on you want to be.
Cooking Methods
Sous Vide Method: This is my preferred method for making most cocktail syrups—a technique I first came across in the book Death & Co: Modern Classic Cocktails.
By sealing fresh kiwi juice and sugar in a temperature-controlled water bath, the sugar dissolves gradually while the kiwi’s bright, tropical flavor gently infuses into the syrup. The steady, low heat helps preserve the fruit’s vivid green color and crisp sweet-tart character, while preventing scorching or over-reduction that can happen with direct heat.
Stovetop Method: This is the traditional method for making cocktail syrups, and it works well enough if you don’t have an immersion circulator or are short on time.
The kiwi juice and sugar are heated together in a saucepan over low heat, stirring until the sugar dissolves completely and the mixture becomes smooth and cohesive. While it’s simple and requires minimal equipment, you’ll want to keep the heat gentle and watch the syrup closely to avoid overheating, which can dull the kiwi’s fresh flavor and vibrant color.
Tools for Making Kiwi Syrup
To make this syrup using the sous vide method, you’ll need the following tools:
Stockpot: This is a large, deep cooking pot with straight sides and a flat bottom that’s typically used for preparing soups, stocks, sauces, or other recipes that require simmering larger quantities of liquid.
Immersion Circulator: This is a compact kitchen device that heats and continuously circulates water to maintain a consistent temperature for precision cooking.
Chef’s Knife: This is a versatile, broad-bladed kitchen knife with a pointed tip, typically 6-10 inches long, that’s designed for slicing, chopping, dicing, and mincing a variety of ingredients.
Electric Citrus Juicer: This is a kitchen appliance that quickly extracts juice from citrus fruits using a motorized reamer, making the process faster and easier than manual juicing.
Measuring Cup Set: This is a collection of cups and spoons in varying sizes, typically featuring easy-to-read markings and durable, easy-to-handle designs, that’s used to accurately measure both dry and liquid ingredients.
Food Scale: This is a kitchen tool that’s used to accurately measure the weight of ingredients, helping ensure precise portions and consistent results in cooking and baking.
Blender: This is a kitchen appliance with rotating blades that chops, purees, or emulsifies ingredients into smooth liquids or mixtures.
Large Freezer Bag: This is a resealable plastic bag with an interlocking closure at the top that’s used for storing, freezing, or transporting food securely.
Small Spring Clips: These are small, spring-loaded clips that are used to hold objects securely together.
Fine Mesh Strainer: This is a bar tool with a tightly woven mesh that’s used to strain small ice shards, pulp, and other solids from mixed drinks for a smooth, clean pour.
Pour Spout Measuring Cup: This is a container that’s marked with volume measurements and equipped with a spout to precisely control pouring liquids.
Silicone Spatula: This is a flexible, heat-resistant kitchen tool that’s used for stirring, scraping, and folding ingredients in bowls or pans without scratching the cookware.
Silicone Funnel: This is a flexible, heat-resistant funnel used to easily transfer liquids or powders into containers with narrow openings without spilling.
Tools I Used
- 🔗 All-Clad D3 3-Ply 8 Quart Stainless Steel Stockpot
- 🔗 Instant Pot Accu Slim Immersion Circulator
- 🔗 OXO Good Grips 8-Inch Chef’s Knife
- 🔗 BLACK+DECKER 32 oz Electric Citrus Juicer
- 🔗 OXO 8 Piece Stainless Steel Measuring Cup Set
- 🔗 OXO Good Grips Everyday Glass Food Scale
- 🔗 Cuisinart SPB-7CH SmartPowder Electronic Bar Blender
- 🔗 Ziploc Gallon Freezer Bags
- 🔗 Romeda 3 ½ Inch Spring Clamps
- 🔗 Barfly Stainless Steel Fine Mesh Cocktail Strainer
- 🔗 OXO Good Grips 2 Cup Angled Measuring Cup
- 🔗 OXO Good Grips Silicone Everyday Spatula
- 🔗 Olamar Premium Silicone Kitchen Funnel Set
How to Store Kiwi Syrup
After your kiwi syrup is ready, it’ll need to be chilled to preserve freshness.
Refrigerator Storage: For short-term use, I transfer the syrup to a condiment squeeze bottle or airtight jar and store it in the refrigerator. This method is great when I plan to use the syrup in cocktails within a few days, since the bottle or jar makes it easy to measure and pour without mess.
Freezer Storage: For long-term storage, I transfer the syrup to a flexible pouch with a pouring spout, leaving a little space at the top to allow for expansion as it freezes. I’ll then thaw the pouch in a bowl of water when I’m ready to use the syrup again.
Flavored syrups like this one typically stay fresh for one to two weeks in the refrigerator and up to three months in the freezer. To keep track of freshness, I recommend labeling your containers with the date the syrup was made so you know when to enjoy or discard each batch.
Storage Containers I Used
Squeeze Bottle: This is a flexible, squeezable container with a narrow spout that’s designed for dispensing liquids or sauces in controlled amounts.
Storage Pouch with Pouring Spout: This is a flexible, resealable container that’s designed for storing liquids so they can easily be poured without spills.
Recipe
Kiwi Syrup
Description
Kiwi syrup is a bright, tangy-sweet mixer crafted by combining fresh kiwi juice with sugar, yielding a luscious green liquid that brings both flavor and visual appeal to cocktails. This version emphasizes the fruit’s crisp, tropical notes and gentle acidity, making it a lively and versatile complement to everything from a Mojito to science fiction-themed originals.
Yield: 16 fl oz
Serving Size: 1 fl oz each
Ingredients
Sous Vide Method
Fill a large stockpot with hot water, attach immersion circulator to the side of the pot, and set temperature to 135°F.
Wash 12 medium kiwis, then using a chef's knife, cut in half.
Using a citrus juicer, juice kiwis one at a time.
Add 480 g sugar to a blender.
Measure out 480 ml kiwi juice, then slowly pour into blender with sugar and blend for 30–60 seconds until sugar is fully dissolved.
Pour kiwi mixture into a high-quality, sealable freezer bag, removing as much air as possible as you seal it.
Once the water has heated to 135°F, submerge the bag, leaving the top 3–4 inches outside of the water, and secure it to the side of the pot with clips so it doesn’t float.
Let syrup cook at 135°F for 2 hours, checking occasionally to make sure the bag remains submerged and the water temperature stays consistent.
Once cooked, carefully remove the bag from the water and place it into an ice bath for a few seconds, then let syrup cool for 5–10 minutes.
Strain syrup through a fine mesh strainer 1–2 times to remove kiwi solids and any undissolved sugar.
Using a funnel, pour syrup into a squeeze bottle or reusable pouch and store in the refrigerator or freezer.
