Exam Focus
- Explain organic acids as a sensory evaluation topic within Specific beer flavor compounds.
- Use specific evidence such as appearance, aroma, taste, mouthfeel, finish, intensity, likely compound, and production or handling context.
- Apply the topic to accurate flavor description, source attribution, and style-fit judgment rather than repeating the heading alone.
Core knowledge
- Lactic acid gives clean yogurt-like or lemony tartness; acetic acid gives vinegar-like sharpness and can become solventlike with ethyl acetate.
- Butyric, isovaleric, caproic, and caprylic acids can read as rancid, cheesy, sweaty, goaty, or fatty depending on compound and level.
- Organic acids may be intentional in sour beer but indicate contamination or process faults in many clean styles.
Study application
Distinguish clean acidity from rough, acetic, rancid, or fatty acid character and tie it to microbes or process.
Key Terms
- Lactic acid
- Lactic acid gives clean yogurt-like or lemony tartness; acetic acid gives vinegar-like sharpness and can become solventlike with ethyl acetate.
- Butyric, isovaleric, caproic, and caprylic acids
- Butyric, isovaleric, caproic, and caprylic acids can read as rancid, cheesy, sweaty, goaty, or fatty depending on compound and level.