What is the difference between standard and rich simple syrup?

Standard simple syrup uses equal parts sugar and water by weight (1:1). Rich simple syrup uses twice as much sugar as water (2:1), giving a thicker, sweeter syrup. Rich syrup is preferred by bartenders because it sweetens without adding as much dilution, and it has a much longer shelf life.

How long does simple syrup last?

Standard 1:1 syrup keeps for about 1 month in the fridge in a sealed container. Rich 2:1 syrup keeps for up to 6 months due to its higher sugar concentration, which inhibits microbial growth. If it turns cloudy, discard it.

Can I make flavoured simple syrup?

Yes, add flavouring ingredients during or after heating. For herbs (mint, rosemary), steep in the hot syrup for 30 minutes then strain. For citrus, add zest while heating. For vanilla, add a split pod or extract after cooling. For ginger, simmer sliced fresh ginger in the syrup.

Why does the syrup yield more volume than the water?

When sugar dissolves in water, the sugar molecules fit into the spaces between water molecules. The combined volume is greater than the water alone but less than the sum of both ingredients separately. This is why 250ml of water plus 250g of sugar does not make 500ml of syrup.

Do I need to boil the water?

For standard syrup, you just need to heat the water until the sugar fully dissolves — simmering is fine, no need for a rolling boil. For rich syrup, you may need slightly more heat as the higher sugar concentration takes longer to dissolve. Let it cool completely before bottling.

BakeCalcs

Simple Syrup Calculator

Calculate sugar and water quantities for simple syrup at 1:1 (standard) or 2:1 (rich) ratios.

Syrup Type

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Target Syrup Volume

How much finished syrup you want

How We Calculate This

Simple syrup is made by dissolving sugar in water. The ratio determines the sweetness and consistency.

Ratios

Standard (1:1): Equal parts sugar and water by weight. Yields ~1.6x the water volume.
Rich (2:1): Two parts sugar to one part water by weight. Yields ~2.2x the water volume.

Method

Combine sugar and water in a saucepan
Heat gently, stirring until sugar dissolves completely
Do not let it boil vigorously
Cool completely before bottling
Store in a clean, sealed container in the fridge

Frequently Asked Questions

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Last updated: February 2026

All calculations are based on standard ratios and conversions. Results may vary with specific ingredients, equipment, and conditions.