How to Calculate Malt Concentrate for Target EBC

Summary

• Explains how brewers can achieve precise beer colour using the EBC (European Brewing Convention) colour scale.
• Introduces PureMalt's specialist liquid malt extracts for colour adjustment, including REX, RB1500/45, and RL20.
• Highlights how these extracts help brewers fine-tune colour with minimal impact on flavour.
• Showcases PureMalt's Colour Calculator, which helps determine the optimal addition rate to reach a target EBC.
• Answers common questions about beer colour measurement, colour adjustment, and target EBC ranges for different beer styles.

Why Beer Colour Calculations Matter

Achieving the perfect hue in your beer or malt beverage demands precision. Whether you're crafting a premium European-style lager or a rich amber ale, knowing exactly how much liquid malt concentrate to add can mean the difference between hitting your target colour and missing the mark entirely. 

At PureMalt, we've spent over five decades helping brewers and beverage developers master these technical challenges. Our speciality malt ingredients, delivered to more than 70 countries across six continents, empower innovation in brewing and beverage formulation.

Understanding the EBC Colour Scale

The European Brewing Convention (EBC) scale measures beer colour through spectrophotometry at 430nm wavelength. Values range from around 4 EBC for the palest lagers to 80+ EBC for dark stouts and porters.

EBC relates to the Standard Reference Method (SRM) used in North America through a straightforward conversion:

• EBC = SRM × 1.97
• SRM = EBC × 0.508

For example, a beer measuring 20 SRM would register approximately 39 EBC on the European scale.

PureMalt Solutions for Precision Colour Adjustment

We've developed a range of liquid malt extracts specifically formulated for colour adjustment with minimal flavour impact. This makes them ideal for fine-tuning your EBC without altering your beer's taste profile.

• REX Roast Malt Extract offers clean label colour with slight caramelised notes. Its low turbidity and viscosity make it particularly effective for late-stage addition, when precision matters most.

• RB1500/45 Roast Malt Extract delivers intense dark colour with minimal flavour contribution. This market-leading extract serves as an excellent alternative for applications requiring deep brown-black hues.

• RL20 Roast Malt Extract brings dark brown colour with mild flavour, making it ideal for lager colour adjustment or adding brown hues to darker ale styles.

• Colour Calculator use our colour calculator tool to test our products and find the optimal addition rate for your target EBC.

Practical Tips for Brewers

After calculating your dosage, keep these recommendations in mind:

• Start conservative: Add slightly less than your calculated amount. You can always adjust upward, but you cannot remove colour once added.
• Sample and compare: Draw a sample after your addition and compare it against a colour reference card before proceeding.
• Document your results: Record actual versus predicted colours to refine your calculations for future batches.
• Consider the style: Different beer styles have expected colour ranges. A red ale for instance, will require less intense extract or a lower addition rate.

Achieve Colour Precision in Your Next Batch

Mastering beer colour calculation takes practice, but the formulas and techniques outlined here will help you hit your target EBC more consistently. Every batch offers an opportunity to refine your approach and build confidence in your colour predictions.

PureMalt's liquid malt concentrates deliver the colour contribution you need with the precision your recipes demand. Our sales team can help you select the right product for your specific application and target EBC range.

Use our colour calculator if you are looking for our recommended addition rates for your target EBC.

Have questions about colour adjustment or need guidance on product selection? Reach out to our team—we're here to help you brew with confidence. 

Conclusion

Consistent colour is a key indicator of quality and craftsmanship in brewing. By understanding the EBC scale, using accurate colour calculations, and selecting the right malt extract, brewers can achieve precise, repeatable results batch after batch. With PureMalt's specialist liquid malt concentrates and colour calculator, brewers have the tools and expertise needed to confidently meet their target colour specifications while maintaining the desired flavour profile.

Frequently Asked Questions

What is the EBC colour scale in brewing?

The EBC (European Brewing Convention) scale measures beer colour using spectrophotometry at 430nm wavelength. Values typically range from 4 EBC for pale lagers to over 80 EBC for stouts. This standardised system helps brewers communicate and replicate colour specifications across batches and facilities.

How do I convert SRM to EBC?

Multiply the SRM value by 1.97 to get the EBC equivalent. For example, a 10 SRM beer equals approximately 19.7 EBC. This conversion applies to modern measurements; historical EBC values from before 1990 used different measurement methods.

Why does my beer come out darker than calculated?

Several factors cause beers to exceed predicted colour values. Extended boiling increases caramelisation, particularly with concentrated worts. Aged liquid extracts tend to darken. Higher mash pH intensifies colour extraction. Adding most of your extract late in the boil helps minimise unwanted darkening.

Can I adjust colour after fermentation?

Yes. Late-stage colour adjustment using low-turbidity extracts like PureMalt's REX allows precise colour trimming post-fermentation. This approach gives you maximum control over your final colour without reprocessing your entire batch.

What EBC range should I target for a lager?

• Traditional pale lagers typically fall between 4-14 EBC.

• Amber lagers range from 18-30 EBC.

• Dark lagers and bocks can reach 30-40 EBC or higher.

Always check style guidelines for your specific beer type to ensure your target falls within accepted ranges.