Understanding sugar reduction in bakery products

Reducing sugar in bakery products sounds simple. Just remove part of the sugar and replace it with something else, right? In reality, sugar reduction is one of the most complex reformulation challenges in the bakery industry. The reason is simple: sugar does much more than provide sweetness.

Sugar has many functions

In cakes, biscuits, and pastries, sugar contributes to several important product properties: 

• Sweetness 
• Texture and tenderness 
• Volume and aeration 
• Spread during baking 
• Colour development 
• Flavour formation 
• Shelf life and moisture control 

When sugar is reduced, all these functions are affected at the same time. If one function is not replaced correctly, the product quality can change dramatically.

For example, a reduced-sugar cake may become: 

• Dense instead of light 
• Pale instead of golden brown 
• Dry instead of soft 
• Stale much faster

Consumers notice small changes

Another challenge is consumer acceptance. Market studies show that consumers often start to notice and dislike products when sweetness is reduced by more than 15–20%. 

This means product developers must carefully balance: 

• Health goals 
• Product quality 
• Consumer expectations 

Reducing sugar is therefore not only a technical challenge, but also a sensory one.

Sugar reduction is a system problem

Many reformulation projects fail because they focus only on sweetness. However, sugar reduction requires a complete redesign of the product system. 

Instead of replacing sugar with one ingredient, developers usually combine several approaches, such as: 

• Bulk replacers like fibres or starches 
• Polyols such as erythritol or maltitol 
• High-intensity sweeteners like stevia 
• Process adjustments during baking Each of these solutions replaces part of the sugar functionality. 

A Step-by-step strategy works best

The most successful approach is often gradual sugar reduction. Reducing sugar in small steps—typically 10–15% per reformulation—helps consumers adapt to the new taste while maintaining product quality. For bakery companies, this stepwise strategy reduces technical risk and improves long-term product acceptance. 

Sugar reduction is therefore not a single ingredient solution. It is a careful balance of formulation, processing, and sensory design.

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