If you're switching to alcohol-free beer, sugar content is one of the first things worth checking. Some AF beers are genuinely low-sugar. Others? They're hiding more sugar per can than you'd find in a chocolate biscuit.
We've pulled together the actual sugar figures for the most popular alcohol-free beers in the UK, per 100ml and per full can, so you can compare properly.
Sugar Content Comparison: UK Alcohol-Free Beers
Here's how the major AF beers stack up on sugar, based on their published nutritional information:
| Beer | Sugar per 100ml | Sugar per can/bottle | Calories per 100ml |
|---|---|---|---|
| IMPOSSIBREW Lager | 0.0g | 0.0g (440ml) | 6 kcal |
| IMPOSSIBREW Pale | 0.1g | 0.4g (440ml) | 6 kcal |
| BrewDog Punk AF | 0.5g | 1.7g (330ml) | 10 kcal |
| Lucky Saint | 1.0g | 3.3g (330ml) | 20 kcal |
| Heineken 0.0 | 1.3g | 4.3g (330ml) | 21 kcal |
| Guinness 0.0 | 1.5g | 6.3g (420ml) | 17 kcal |
| Peroni Nastro Azzurro 0.0% | 3.0g | 9.9g (330ml) | 24 kcal |
| Erdinger Alkoholfrei | 3.2g | 16.0g (500ml) | 25 kcal |
| Bavaria 0.0 | 2.8g | 9.2g (330ml) | 24 kcal |
The difference is significant. A single can of Erdinger Alkoholfrei contains 16g of sugar, roughly the same as four digestive biscuits. IMPOSSIBREW Lager contains none.
Why Do Some Alcohol-Free Beers Have So Much Sugar?
When you remove alcohol from beer, you lose body and mouthfeel. Many breweries compensate by leaving residual sugars in the brew or adding sweeteners to make the beer taste fuller. It's an easy shortcut, but it defeats the purpose for anyone choosing AF beer for health reasons.
The brewing method matters too. Traditional dealcoholisation (heating the beer to evaporate alcohol) tends to leave more sugar behind. More modern approaches, like arrested fermentation or vacuum distillation, give brewers better control over the final sugar content.
IMPOSSIBREW uses a process that keeps sugar at near-zero levels while maintaining genuine beer flavour. The result is a beer with 27 calories per 440ml can, less than a glass of orange juice.
Hidden Sugar: What the Labels Don't Always Tell You
In the UK, nutritional labelling on alcohol-free beer isn't always straightforward. Some brands only list sugar per 100ml, which makes a high-sugar beer look reasonable until you multiply it by the actual serving size.
A beer showing "3g per 100ml" doesn't sound alarming, but in a 500ml bottle, that's 15g of sugar. For context, the NHS recommends adults consume no more than 30g of free sugars per day. Two bottles of a higher-sugar AF beer could use up your entire daily allowance.
If you're tracking sugar intake, whether for weight management, diabetes, or general health, always check the per-serving figure, not just per 100ml.
Does Sugar-Free Mean Taste-Free?
This is the common assumption, and it's wrong. Sugar isn't what makes beer taste good, it's the malt, the hops, and the brewing process. A well-brewed low-sugar AF beer should taste like beer, not like flavoured water.
IMPOSSIBREW's range has won multiple awards including UK's Best Tasting Alcohol-Free Beer at the World Beer Awards, with essentially zero sugar. The flavour comes from the brewing, not from added sweetness.
On top of that, IMPOSSIBREW contains a unique Social Blend™ of functional ingredients, including L-Theanine, Ashwagandha, and Magnesium, designed to help you relax without alcohol. So you're not just avoiding sugar; you're getting something genuinely useful in return.
Best Low-Sugar Alcohol-Free Beers in the UK
If low sugar is your priority, here are the best options available in the UK right now:
- IMPOSSIBREW Lager, 0.0g sugar, 27 cal per can, functional ingredients
- IMPOSSIBREW Pale, 0.1g sugar per 100ml, same low-calorie profile
- BrewDog Punk AF, 0.5g per 100ml, widely available
- Lucky Saint, 1.0g per 100ml, decent flavour but higher calorie
The gap between the best and worst options is enormous. Choosing wisely can mean the difference between 0g and 16g of sugar per serving.
Frequently Asked Questions
Informational only. If you manage diabetes or follow a dietitian-prescribed plan, check product labels against your own targets.
How much sugar is in alcohol-free beer on average?
It varies widely. Lighter lager-style alcohol-free beers tend to sit around 1.5 to 3g of sugars per 100ml, while sweeter wheat or malt-forward styles can exceed 4g per 100ml. A 500ml bottle at 4g per 100ml contains 20g of sugars, more than a standard orange juice of the same size. Always check the per-100ml figure on the label, not the per-serving headline.
Why do some alcohol-free beers have more sugar than regular beer?
In full-strength beer, yeast ferments most of the sugars into alcohol. When alcohol is removed or fermentation is stopped early to keep the ABV below 0.5%, residual sugars stay in the drink. Some brewers then add extra malt or adjunct sugars to rebuild body and flavour, which pushes the sugar figure higher. The process, not the intent, is why sugars creep up.
How much sugar is in IMPOSSIBREW?
Enhanced Lager contains 3.1g of sugars per 440ml can (0.7g per 100ml) and 75 kcal per can. Enhanced Pale contains 2.6g of sugars per 440ml can (0.6g per 100ml) and 70 kcal per can. Both are 0.5% ABV, vegan, and certified gluten-free at under 20ppm.
Is alcohol-free beer suitable for a low-sugar diet?
It can be, if you pick the right one. A 440ml alcohol-free beer at 0.6g of sugars per 100ml delivers about 2.6g of sugars, less than half a teaspoon. Compare that to roughly 35g in a 330ml can of cola. Low-sugar alcohol-free options can fit comfortably into a low-added-sugar pattern, but higher-sugar styles should be treated like any other sweetened drink.
Does alcohol-free beer count as a soft drink under the UK sugar tax?
No. The Soft Drinks Industry Levy applies to non-alcoholic drinks with added sugar above 5g per 100ml, but beer, including dealcoholised beer below 1.2% ABV, sits under separate alcohol duty rules and is excluded from the levy. That is regulatory, not nutritional, so a high-sugar alcohol-free beer can still carry a real sugar load.
How do IMPOSSIBREW sugars compare with a typical lager and a soft drink?
A 440ml can of Enhanced Lager contains 3.1g of sugars and 75 kcal. A 330ml can of cola contains about 35g of sugars and around 140 kcal. A 440ml full-strength lager sits near 0g of sugars but roughly 180 kcal from alcohol. Lower alcohol, lower calories, and similarly low sugar in a single swap.
