Simple Syrup
The ingredient most likely to rewrite a recipe without anybody noticing. Simple is equal parts sugar and water; rich is two parts sugar to one. Swap one for the other and every drink you make is either half again as sweet or noticeably thin.
Quick Facts
Flavour Profile
Primary Flavours
Tasting Notes
Clean, neutral sweetness with no added flavour when made with white sugar. Designed to support other ingredients rather than stand out.
Recommended Brands
Budget Choice
Homemade at 1:1: two ingredients and five minutes, which is the entire recipe
Premium Choice
St Nicholas Abbey Sugar Cane Syrup: pressed cane rather than refined sugar, with a grassy edge that suits rum
Storage & Handling
Store sealed in the refrigerator. Keep containers clean to prevent spoilage, especially for homemade syrups.
Shelf Life
Homemade: 2–4 weeks refrigerated. Commercial: follow manufacturer guidance
Usage
10 to 20ml in a sour, against 25 to 30ml of citrus. It sweetens the Daiquiri, the Whiskey Sour and the Tom Collins, and it is preferred to granulated sugar because it dissolves cold and measures the same every time.
The Ratio Is the Ingredient
Simple syrup is equal parts sugar and water. Rich syrup is two parts sugar to one part water, and it is roughly twice as sweet by volume.
Recipes assume simple unless they say otherwise, which makes the substitution a quiet way to break a drink. Pour rich where a recipe wanted simple and you have added half again as much sugar without changing a number in the build. It is the likeliest reason a carefully measured sour tastes wrong.
Making It
Warm water and a stir until the liquid runs clear, or a sealed jar and two minutes of shaking if the water is cold. Both work and neither needs heat beyond hand-warm.
Do not boil it. Boiling evaporates water, which concentrates the syrup past the ratio you set out to make, so a batch that started as simple finishes somewhere between simple and rich with nothing on the jar to say so.
Keeping It
Sugar is the preservative, so the richer syrup lasts longer. A 1:1 batch holds a few weeks refrigerated and a 2:1 batch considerably more, and a small measure of vodka extends either.
Cloudiness is the end of it. A syrup that has gone hazy or grown anything is finished, and since the ingredient costs pennies and takes two minutes there is never a reason to argue with it.
Keep it in something you can pour from accurately. A syrup measured out of a wide-mouthed jar arrives in the shaker as an approximation, and the whole point of using syrup rather than granulated sugar was that the sweetness measures the same every time.
When Rich Is Right
Spirit-forward drinks, where the extra water in a 1:1 syrup dulls what it is meant to be sweetening. The Old Fashioned family is the clearest case: the drink is already being diluted by a large piece of ice over a long stir, and it does not need more water arriving with the sugar.
Demerara or another dark sugar changes the argument again, adding molasses depth rather than sweetness alone, which is why aged spirits often take it in preference to white.
Pro Tip
Simple syrup should be invisible. If you can taste it, there’s probably too much.
Top Tips
- Label the jar with the ratio and the date. An unlabelled bottle of syrup is a recipe waiting to go wrong, because simple and rich look identical.
- Warm water, never boiling. Boiling drives off water and concentrates the syrup past the ratio you were aiming for.
- Halve the volume when a recipe calls for rich and you only have simple, then taste. The sugar matches; the water does not.
Possible Substitutions
- Granulated sugar (harder to dissolve)
- Demerara syrup (adds molasses notes)
- Honey syrup (adds floral sweetness)
Production Method
Made by dissolving sugar in water, typically in a 1:1 ratio by volume. Heated gently to dissolve, then cooled before use.
History & Context
Simple syrup became standard in cocktail making as bartenders sought consistent sweetness without the texture issues of undissolved sugar. It remains one of the most versatile and widely used modifiers in drinks.
Common Questions
What ratio is simple syrup?
Equal parts sugar and water for simple, two parts sugar to one for rich. Recipes assume simple unless they say rich, and mixing the two up rewrites every drink by stealth, which is why the jar wants a label rather than a guess.
How do you make it?
Stir sugar into warm water until the liquid runs clear, or seal it in a jar and shake it cold for two minutes. Neither needs heat beyond hand-warm, and boiling is actively unhelpful because it evaporates water and shifts the ratio you were aiming for.
How long does it keep?
A few weeks refrigerated at 1:1 and considerably longer at 2:1, because the sugar is doing the preserving. A small measure of vodka extends either. Cloudiness or anything growing means it is finished, and a fresh batch costs pennies and two minutes.
When do recipes want rich syrup?
Spirit-forward drinks, where the water in a 1:1 syrup dulls what it is sweetening. The Old Fashioned family especially, since a large cube and a long stir are already supplying dilution. Halve the volume when substituting rich for simple, then taste.