Mixers

Brown Sugar

Soft brown sugar is sugar carrying cane molasses or treacle, which gives it colour, a damp texture and a toffee flavour; dark brown carries more than light. Many UK packs are refined sugar with the molasses mixed back in. Our Hot Buttered Rum beats 15g of dark brown into its butter batter, and our Wassail is sweetened with it to taste.

Quick Facts

Legal categoryFood

Flavour Strengthlight medium

Our keeping timeIndefinitely, airtight; it hardens as it dries.

Storage

In an airtight tub, so its moisture stays in and it stays soft.

Allergens

None of the 14 listed allergens.

The ingredient

About Brown Sugar

Flavour Profile

Primary Flavours

carameltoffeemolasses

Tasting Notes

Caramel and toffee over a damp molasses base: warmer and rounder than white sugar, with a faint bitter edge in the darker grades.

Sugar with molasses put back

Soft brown sugar is mostly sucrose with a coating of molasses, treacle or refiner’s syrup, which brings colour, a damp texture and toffee notes. On UK shelves it is usually made by mixing refined sugar with the syrup: Silver Spoon’s light brown lists sugar and cane molasses, and Ragus describes the same method. Dark brown simply carries more.

Brown sugars compared

Light soft brown

How it is made: Refined sugar with a little molasses added
Texture: Fine, damp
Where we use it: A milder swap for dark

Dark soft brown

How it is made: Refined sugar with more molasses added
Texture: Fine, damp, packs down
Where we use it: Hot Buttered Rum

Demerara

How it is made: Partly refined cane sugar, some molasses left in
Texture: Large, dry crystals
Where we use it: Irish Coffee, Blue Blazer

Muscovado

How it is made: Least refined, most of its own molasses kept
Texture: Sticky, very damp
Where we use it: Not in our recipes

Sugar	How it is made	Texture	Where we use it
Light soft brown	Refined sugar with a little molasses added	Fine, damp	A milder swap for dark
Dark soft brown	Refined sugar with more molasses added	Fine, damp, packs down	Hot Buttered Rum
Demerara	Partly refined cane sugar, some molasses left in	Large, dry crystals	Irish Coffee, Blue Blazer
Muscovado	Least refined, most of its own molasses kept	Sticky, very damp	Not in our recipes

It belongs in batters and hot punch

Damp sugar beats into fat well, which makes it right for the Hot Buttered Rum batter: 15g of dark brown beaten pale with 30g of butter, then the spices. The Wassail sweetens warm cider and juice with it a spoonful at a time, kept under a simmer. For cold drinks the crystals cling and clump, so make a syrup or use demerara syrup.

Keep it soft

Brown sugar stays soft only while its moisture stays in. In an open bag it dries into a block; in an airtight tub it keeps indefinitely. A hardened block softens overnight with a slice of bread in the tub. Weigh it rather than spooning, since it packs down and a heaped spoon holds far more than a level one. Light and dark swap weight for weight; only the depth of toffee changes.

Using it

Using Brown Sugar

Usage

Beaten with softened butter into a batter, 15g of dark brown per Hot Buttered Rum, or stirred a spoonful at a time into a warm punch such as Wassail until it tastes right. For a cold drink, dissolve it into a syrup first.

Pro Tip

If a batch of Wassail tastes flat rather than under-sweet, add a squeeze of fresh juice before more sugar. Brown sugar adds depth, and too much buries the apple.

Top Tips

Weigh it. Soft brown sugar packs down, so a spoonful varies.
Beat it with the butter until pale before the spices go in.
Sweeten a hot punch in stages, tasting as you go.
Keep it in an airtight tub. Brown sugar dries hard when the air gets in.

Possible Substitutions

Caster Sugar: plus a little molasses or treacle
Sugar (Demerara): coarser, less moist
Simple Syrup: where a liquid sweetener suits

Production Method

Usually refined white sugar mixed with cane molasses, refiner’s syrup or treacle, which gives the colour, moisture and flavour; dark grades carry more. Some brown sugars are less refined cane sugar that keeps its own molasses.

Go further

More to explore

Common Questions

What is brown sugar?

Sugar that carries molasses, which gives it a brown colour, a damp, packable texture and a toffee flavour. Most UK soft brown sugar is refined sugar coated with cane molasses or treacle: Silver Spoon lists sugar and cane molasses, and Ragus mixes refined sugar with refiner’s syrup and treacle.

Light or dark brown sugar for Hot Buttered Rum?

Our recipe uses dark brown, 15g per drink, because its extra molasses gives the batter a deeper toffee flavour that stands up to dark rum and spice. Light brown works and tastes milder. White sugar makes a thinner, plainer drink.

Is brown sugar the same as demerara?

No. Demerara is a dry, large-crystal cane sugar that keeps a little of its own molasses and dissolves slowly. Soft brown sugar is fine, damp and usually white sugar with molasses added back. Our recipes name which they mean; the Irish Coffee uses demerara, the Hot Buttered Rum soft brown.

Can I use brown sugar instead of white in a cocktail?

In a dark or hot drink, yes: it brings caramel and colour with the sweetness. In a clear or delicate drink it muddies both. Dissolve it in warm water first for a cold drink, since the damp crystals cling and clump in a shaker.

How do you soften hard brown sugar?

It has dried out. Seal it in a tub with a slice of bread or a damp piece of kitchen paper overnight, or warm it very briefly, and it will soften again. Then keep it airtight, which is the only real prevention.

How much brown sugar goes in Wassail?

Our recipe gives no fixed amount. Ciders and juices vary too much, so it is added a spoonful at a time while the bowl warms, kept under a simmer and never boiled, stopping while it still tastes of apple.

Make something

Made with Brown Sugar

Featured In These Cocktails

Hot Buttered Rum Wassail

Often Used With

Guide by Jerry Can Spirits · Updated 11 October 2026

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