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About Kiwi Syrup
Simple syrup, sometimes called “sugar syrup,” is a basic sweetener that’s commonly used in cocktails. In its simplest form, it’s made by dissolving sugar in water to create a smooth, sweet liquid.
Kiwi syrup is a bright, tangy-sweet variation that gently infuses fresh kiwi juice with sugar using a sous vide method. Its vivid green color, crisp tropical flavor, and gentle acidity make it a versatile mixer that adds both flavor and visual appeal to drinks without the graininess or caramelization that can occur with stovetop syrups.
Native to China but now grown in many temperate regions around the world, kiwi is known for its striking green color and naturally sweet-tart flavor, with tropical and slightly citrusy notes. While many cocktail enthusiasts reach for pre-made flavored syrups, I prefer making mine at home to capture the fruit’s unique flavor and brilliant hue, creating a fresh, natural syrup perfect for everything from sparkling spritzes to rum- or gin-based cocktails.
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
Kiwi Syrup Tools
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.
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.
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.
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
- 🔗 BLACK+DECKER 32 oz Electric Citrus Juicer
- 🔗 OXO Good Grips 8-Inch Chef’s Knife
- 🔗 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 Make & Store Kiwi Syrup
While many cocktail syrup recipes call for using the stovetop, I prefer making most syrups sous vide—a method I first found in the book Death & Co: Modern Classic Cocktails. Gentle, precise heat and slow cooking allow the sugar to dissolve completely while preserving the kiwi’s vibrant green color and bright, tangy-sweet flavor. Plus, using an immersion circulator prevents scorching or over-reduction, which can mute both the flavor and the vivid hue.
Sous Vide Method
Fill a large stockpot with hot water, attach an immersion circulator to the side of the pot, and set the temperature to 135°F. Wash 8 ripe kiwis, then cut off the top and bottom ends. Using a citrus juicer, extract the juice from the kiwis one at a time. Add 300 g sugar to a blender, then measure out 300 ml of the kiwi juice and slowly pour it into the blender with the sugar, blending for 30–60 seconds until fully dissolved. Pour the kiwi mixture into a high-quality, sealable freezer bag, removing as much air as possible as you seal it. Once the water reaches 135°F, submerge the bag with the top 3–4 inches remaining above the water, securing it to the side of the pot with clips so it doesn’t float. Let the syrup cook for 2 hours, checking occasionally to ensure the bag stays submerged and the temperature remains consistent. Carefully remove the bag and place it in an ice bath for a few seconds, then let it cool for 5–10 minutes. Strain the syrup through a fine-mesh strainer 1–2 times to remove kiwi solids and any undissolved sugar, then funnel it into a squeeze bottle or reusable pouch for storage in the refrigerator or freezer.
Storage Methods
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.
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.
Method: Sous Vide
Serving Size: 16 (1 fl oz each)
Ingredients
Method
Fill a large stockpot with hot water, attach immersion circulator to the side of the pot, and set temperature to 135°F.
Wash 8 ripe kiwis, then using a chef's knife, cut off the top and bottom ends.
Using a citrus juicer, juice kiwis one at a time.
Add 300 g sugar to a blender.
Measure out 300 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.












