Simple Syrup Recipe: How to Make It & Use It in Cocktails

Simple syrup is the quiet workhorse of every craft cocktail bar. Two ingredients — sugar and water — combined in the right ratio dissolve evenly into cold drinks where granulated sugar would just sink. The whole recipe takes five minutes, costs about thirty cents per cup, and lasts a month in the fridge. This guide covers the canonical 1:1 recipe, the 2:1 (rich) recipe most cocktails actually call for, the variations bartenders reach for (demerara, honey, agave), and which syrup belongs in which drink.

TL;DR — Simple Syrup at a Glance

• Ratio that matters most: 2:1 sugar-to-water ("rich" simple syrup). It's what cocktail bars actually use because it dilutes drinks less than the 1:1 version.
• Time: 5 minutes, stovetop. 2 minutes if you skip the heat and shake it cold.
• Shelf life: 1:1 lasts ~1 month in the fridge; 2:1 lasts ~6 months because the higher sugar content inhibits microbial growth.
• Best swap for an Old Fashioned: Demerara 2:1 instead of plain white. Adds caramel and molasses depth without changing the build.

How to Make Simple Syrup

The standard recipe is one part sugar dissolved into one part water. The "rich" recipe — what most bartenders actually pour — is two parts sugar to one part water. Both are made the same way; the difference is just the sugar load.

The Recipe (1:1 Standard)

• 1 cup white granulated sugar
• 1 cup filtered water

1. Combine sugar and water in a small saucepan over medium heat.
2. Stir gently until the sugar dissolves — about 2 to 3 minutes. The liquid will turn from cloudy to clear.
3. Remove from heat. Do not boil; boiling reduces the water and shifts your ratio.
4. Cool to room temperature, then pour into a clean glass bottle or jar.
5. Refrigerate. Use within one month.

The Recipe (2:1 Rich Syrup)

• 2 cups white granulated sugar
• 1 cup filtered water

Method is identical to the 1:1 — combine, warm, stir until clear, cool, bottle. Stirring time runs about 4 minutes because there's more sugar to dissolve. Yield is approximately 1¾ cups of syrup. This is the version we recommend for cocktail use; the lower water content means you add less dilution to a drink that already gets diluted by ice.

The No-Cook Method

Skip the stove entirely if you're impatient. Combine equal parts sugar and water in a sealed jar, shake hard for 60 to 90 seconds, then let it rest for two minutes and shake again. The sugar will dissolve through agitation alone. The result is identical to the heated version — slightly hazier on day one, fully clear by day two. This works for 1:1 only; the 2:1 ratio needs heat to fully dissolve.

Simple Syrup Variations Every Cocktail Bar Stocks

"Simple syrup" really means a family of sweetened liquids that all use the same dissolve-and-bottle technique. Each variation pairs with specific spirits and drinks.

Syrup	Sugar Type	Best Cocktails	Flavor Adds
Standard	White granulated	Daiquiri, Mojito, Whiskey Sour	Pure sweetness, no flavor
Rich (2:1)	White granulated	Old Fashioned, Manhattan, Sazerac	Same as standard but less dilution
Demerara	Demerara or turbinado	Old Fashioned, Tiki drinks, Rum punches	Caramel, molasses, brown-sugar depth
Honey	Honey + water (3:1)	Bee's Knees, Gold Rush, Penicillin	Floral, herbal, light fruit
Agave	Agave nectar (use neat or 1:1 with water)	Margarita, Tequila Old Fashioned, Paloma	Vegetal, agave-forward
Brown sugar	Light brown sugar	Brown Sugar Old Fashioned, Hot Toddy	Aggressive molasses, smoke
Maple	Pure maple syrup (use neat)	Maple Old Fashioned, Whiskey Sour	Tree-fruit complexity, autumn notes

Demerara Syrup (Cocktail Bar Standard)

Demerara syrup is the single most important variation for whiskey cocktails. The unrefined cane sugar adds caramel and a faint smoky-molasses character that integrates with rye spice and bourbon vanilla in a way that white sugar cannot. Make it 2:1 — 2 cups demerara sugar to 1 cup water — using the same stovetop method. Heat is required because demerara crystals are coarser and don't dissolve cold.

For the full sweetener decision tree (when to use demerara vs maple vs honey vs muddled cube), see our Old Fashioned Sweetener Guide.

Honey Syrup

Pure honey is too thick to dissolve in a cold cocktail. Cut it 3:1 with hot water (3 parts honey, 1 part water), stir until uniform, and bottle. The result pours like simple syrup but carries the honey's character — wildflower, clover, orange blossom, or buckwheat all shine through. Pairs especially well with scotch and Irish whiskey, both of which have natural honey notes in the spirit.

Agave Syrup

Light agave nectar is already syrup-thick and pours straight from the bottle into cocktails. If your agave is on the heavier side, dilute 1:1 with water. Agave's vegetal sweetness matches tequila and mezcal directly — see our Tequila Old Fashioned and Oaxacan Old Fashioned recipes, both of which use it in place of demerara.

Simple Syrup for Cocktails: Which Drink Uses Which

The cocktail you're making determines the syrup you should reach for. Here's the working logic most bartenders follow:

• Spirit-forward, stirred drinks (Old Fashioned, Manhattan, Sazerac): Demerara 2:1. The unrefined sugar's depth matches American whiskey's oak character.
• Citrus-forward, shaken drinks (Daiquiri, Whiskey Sour, Margarita): Standard 1:1 white syrup. You don't want competing flavors fighting fresh lime or lemon juice.
• Rum cocktails (Mai Tai, Daiquiri, Hurricane): Demerara 2:1 if the drink is aged-rum-based; standard 1:1 for white-rum builds.
• Whiskey + honey (Gold Rush, Penicillin, Bee's Knees): Honey syrup, full stop.
• Tequila and mezcal cocktails (Margarita, Tommy's Margarita, Mezcal Negroni): Agave syrup or light agave nectar.
• Holiday and seasonal builds (Hot Toddy, Mulled Wine): Brown sugar or maple syrup.

Why an Old Fashioned Wants Rich Syrup, Not Standard

The Old Fashioned is built around 2 oz of 95–100 proof spirit and ¼ oz of sweetener. If your sweetener is 1:1 simple syrup, you're adding meaningful water to a drink that's about to spend twenty minutes on a single ice rock. By the third sip, the cocktail has the structure of a watered-down whiskey. Switch to 2:1 demerara and the ratio holds — same sweetness perception, half the water — and the drink stays at proper strength through the full glass. This single substitution is the most common upgrade home bartenders make to their Old Fashioned game.

Storage, Shelf Life, and Spoilage

Simple syrup spoils through bacterial and yeast growth, both of which need water to thrive. Higher sugar concentration starves them of usable water and extends shelf life dramatically.

• 1:1 standard syrup: 3 to 4 weeks refrigerated. Cloudy or mold spots = throw it out.
• 2:1 rich syrup: 4 to 6 months refrigerated. The high sugar load acts as a natural preservative.
• Demerara 2:1: 4 to 6 months refrigerated, same as white 2:1.
• Honey syrup: 1 month refrigerated. Honey's natural enzymes degrade once diluted with water.
• Agave syrup (cut 1:1): 2 to 3 months refrigerated.

Always store in a sealed glass bottle in the refrigerator. A swing-top glass bottle works perfectly. Keep it on a shelf, not the door — temperature stability matters for shelf life.

Adding Vodka to Extend Shelf Life

One ounce of neutral vodka added to a 16-ounce bottle of simple syrup pushes shelf life out to 3 to 6 months even on the 1:1 version. The alcohol is undetectable at that ratio (less than 2% ABV in the syrup itself, and a fraction of an ounce of syrup goes into a finished cocktail), and the antimicrobial effect is real. This is what high-volume cocktail bars do to large batches.

Common Questions About Simple Syrup

What's the difference between simple syrup and rich simple syrup?

Simple syrup is 1 part sugar dissolved in 1 part water by volume. Rich simple syrup is 2 parts sugar to 1 part water. Rich syrup adds the same perceived sweetness as standard syrup but adds half the water, which is critical in cocktails that already get diluted by ice.

Can I use simple syrup instead of sugar in baking?

Sometimes. Simple syrup works in recipes where the sugar would be dissolved anyway — drink mixers, glazes, soaks for layer cakes, fruit macerations. It does not work in recipes where granulated sugar's structure matters, like creaming butter into cookies or aerating a meringue.

Why is my simple syrup cloudy?

Three usual causes: the sugar wasn't fully dissolved (warm it again briefly), you boiled it and inverted some of the sucrose (cosmetic only — still tastes fine), or the syrup is starting to ferment (throw it out). Cloudy syrup with no off-smell and no visible spots is safe to use; cloudy with mushroom-like haze or visible film is not.

Does simple syrup need to be refrigerated?

Yes for any syrup you plan to keep more than a day or two. Sugar inhibits but does not stop microbial growth at room temperature. Refrigeration extends shelf life by 5 to 10×.

Can I substitute simple syrup for sugar in a cocktail recipe?

Yes, with conversion. One teaspoon of granulated sugar equals roughly ½ teaspoon (¼ ounce) of 2:1 rich simple syrup or ¾ teaspoon of 1:1 standard syrup. Most modern cocktail recipes already specify simple syrup; older recipes that call for "1 sugar cube" assume a sugar cube of about 1 teaspoon.

What's the best sugar to use for simple syrup in cocktails?

White granulated for clean, neutral sweetness in citrus drinks. Demerara or turbinado for stirred whiskey cocktails — the unrefined sugar adds caramel depth. Avoid powdered sugar (it has cornstarch) and avoid superfine sugar (no advantage; standard granulated dissolves fine with heat).

How much simple syrup should I make at a time?

For home bars: 1 cup sugar + 1 cup water yields about 1½ cups of finished 1:1 syrup, which lasts a casual home drinker 3 to 4 weeks. If you make cocktails for guests regularly, scale up to 2 cups + 2 cups for a quart of finished syrup. The 2:1 rich version at 2 cups sugar + 1 cup water yields 1¾ cups and lasts months, which is what we'd recommend.

Related Reading

• Old Fashioned Sweetener Guide — demerara vs maple vs honey vs sugar cube for the canonical drink.
• Old Fashioned Bitters Guide — Angostura, orange, chocolate, mole, and the rest.
• Old Fashioned Ingredients Guide — every component of the classic build, top to bottom.
• How to Make an Old Fashioned — step-by-step technique with the rich syrup ratio.
• Maple Old Fashioned — the autumn variation built on maple syrup.
• Honey Old Fashioned — using honey syrup in place of demerara.
• Old Fashioned Corner — the full library, from recipes to bottle reviews.

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