Welcome to Beer Quality: Color and Clarity led by distinguished professor Charles Bamforth, Ph.D. In this course, you will learn about beer color and how it impacts a consumer's perception of beer. Also discussed are the scientific factors affecting beer color and clarity. The methods of measuring and altering beer color are presented, as are ways to troubleshoot problems with beer color.
Beer Quality: Color & Clarity
This course is part of Beer Quality Specialization
Instructor: Charles Bamforth
Recommended experience
What you'll learn
Discover the science behind beer color and clarity, how to measure and assess color, and how to achieve ideal color and clarity in beer.
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There are 4 modules in this course
In this module, we begin discussing how beer color and clarity influences the consumer. We'll review some informal research that was conducted regarding consumer perception of beer based on clarity. If you clarify a beer, does it take anything away? We'll discuss this question.
What's included
5 videos3 readings1 assignment1 discussion prompt
In this module, we'll discuss color, some of the basic science behind it, and how humans perceive it. We'll review the Beer-Lambert law equation as well as well as the ASBC and EBC methods of measuring color and look at light absorbance of various beers. Then, we'll review methods and devices used to measure color and discuss what to consider when choosing a method. We'll go over the main source of color in most beers, the Maillard Reaction. And, you'll understand how the oxidation of polyphenols affects beer color, ways of adjusting beer color, and discuss what to do when your beer color is not what you were expecting.
What's included
7 videos2 readings2 assignments
In this module, we start our discussion regarding turbidity in beer and the role of bits in beer clarity. We'll discuss what invisible haze is and how it affects beer clarity, compare biological haze with non-biological haze, and compare and contrast chill haze with permanent haze. We'll also look at how we measure, interpret turbidity issues, discuss how bits and haze are measured, and touch on the role of microbiology in beer stability.
What's included
7 videos2 readings2 assignments
In this module, we discuss how grist, hops, malting, and mashing influence beer clarity and stability. We'll also discuss how wort, fermentation, cold conditioning, filtration, stabilizers, and packaging influence clarity and stability. We'll also offer methods of troubleshooting turbidity and touch on beta-glucan, arabinoxylan, starch, oxalate, and dead bacteria. We'll also offer methods of troubleshooting turbidity involving protein, foam stability, and polyphenols.
What's included
6 videos2 readings3 assignments1 discussion prompt
Instructor
Offered by
Recommended if you're interested in Chemistry
University of California, Davis
University of California, Davis
University of California, Davis
University of California, Davis
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