Cotton candy is one of those fairground foods that feels almost magical — a cloud of spun sugar that dissolves the moment it touches your tongue. But what kind of sugar actually goes into making it? The answer is simpler than you might expect, and it reveals something useful about sugar in general.
Key takeaways
- Regular white granulated sugar is the only type that works reliably in a cotton candy machine.
- Powdered sugar clogs the machine; brown sugar burns due to its molasses content.
- You can colour cotton candy at home by mixing granulated sugar with a few drops of food colouring.
- A typical cotton candy serving contains 15 to 30 grams of sugar — less than a can of soda.
- The WHO recommends keeping free sugar intake below 50 grams per day for adults.
- Hidden sugars in everyday foods like yoghurt and pasta sauce are often a bigger concern than occasional treats.
What sugar do you use for cotton candy?
The cotton candy machine works by heating sugar until it melts, then spinning it through tiny holes at high speed. The resulting thin threads solidify immediately in the cooler air and form the characteristic fluffy cloud.
The machine requires white granulated sugar — full stop. Fine granulated sugar (smaller crystals) also works well and produces slightly thinner threads, but the principle is the same. Here is why other types fail:
1. Powdered sugar
Powdered sugar is simply very finely milled granulated sugar, often with a small amount of anti-caking agent (such as cornstarch). This makes it clump in the heated spinning head rather than spinning into threads. Avoid it.
2. Brown sugar and raw cane sugar
These contain trace amounts of molasses, which burns at the temperatures required for cotton candy. The result is a sticky, darkened mess and an unpleasant caramel-burnt smell. Stick to white granulated.
3. Coloured cotton candy sugar
The vibrant pink and blue cotton candy you see at fairs is nothing more than white granulated sugar with food colouring. You can replicate this at home: mix one kilogram of granulated sugar with three to five drops of gel food colouring, spread it on a tray to dry for 30 minutes, then use as normal.
How much sugar is in cotton candy?
A standard serving of cotton candy contains 15 to 30 grams of sugar, depending on the size. That sounds significant, but keep in mind that cotton candy is largely air — the volume is misleading. By comparison, a can of soft drink typically contains around 35 grams of sugar, and a small tub of fruit yoghurt can contain 15 to 20 grams.
The WHO recommends that free sugars make up no more than 10 percent of total daily energy intake. For an adult consuming 2,000 kcal per day, that translates to around 50 grams of free sugar. A single cotton candy fits comfortably within that limit. The bigger concern is usually hidden sugars in everyday products like pasta sauce, breakfast cereals, and flavoured yoghurt.
Sugar awareness over sugar avoidance
The goal is not to eliminate treats like cotton candy — that approach tends to backfire. The goal is to understand where sugar actually accumulates in your daily diet. Knowing that a fairground cotton candy contains less sugar than a can of cola puts things in perspective.
Reading nutrition labels helps. Look for the "of which sugars" line under carbohydrates. Sugar appears under more than 50 different names: sucrose, glucose, fructose, maltose, agave syrup, dextrose, and many more. If sugar is listed as the first or second ingredient, the product is high in sugar regardless of how healthy the packaging looks.
Make your own cotton candy at home
If you have a cotton candy machine, you need just three things:
- White granulated sugar. Use fine granulated if your machine specifies it, otherwise standard works fine.
- Gel food colouring (optional). Liquid food colouring dilutes the sugar slightly; gel gives a more vivid result.
- A warm machine. Let it heat up for two to three minutes before adding sugar.
Add one tablespoon of sugar at a time to the spinning head — too much at once produces uneven results. Rotate slowly around the machine to catch the threads as they form.
Start building awareness about what you eat
Occasional treats are part of a balanced life. Want to also understand how many calories you consume daily? Read our beginner's guide to calorie tracking. Or first calculate your calorie deficit if you are trying to lose weight. What makes the difference is having a clear picture of your overall daily intake rather than fixating on individual foods. If you want to understand exactly how much sugar is in your meals and snacks, Moveno lets you photograph your food and see the nutritional breakdown instantly — including sugar content. Download the app and start today.
Sources
- Voedingscentrum — WHO guidelines on free sugars — recommended maximum intake of free sugars for adults
- Voedingscentrum — Sugar — types of sugar and daily intake context
- Rutger Bakt — Types of sugar — practical differences between granulated and powdered sugar
