HarvardX: Food Fermentation: The Science of Cooking with Microbes course Syllabus

Overview (80-120 words) describing structure and time commitment. This course provides a beginner-friendly introduction to the science of food fermentation, combining microbiology with practical culinary applications. Over approximately 8–12 weeks, learners explore how microbes such as bacteria, yeast, and molds transform food through biochemical processes like lactic acid and alcoholic fermentation. The curriculum integrates scientific principles with hands-on techniques for home and professional use, covering safety, traditional practices, and modern innovations. Each module blends video lectures, readings, and applied activities to build both knowledge and skills in fermentation science.

Module 1: Introduction to Microbial Fermentation

Estimated time: 6 hours

• Understand the basics of microbiology relevant to fermentation
• Explore the role of beneficial microbes in food transformation
• Study the historical and cultural significance of fermented foods
• Learn essential food safety principles for fermentation practices

Module 2: Biochemistry of Fermentation

Estimated time: 7 hours

• Examine metabolic pathways used by fermenting microbes
• Understand lactic acid fermentation and ethanol production
• Analyze how pH changes contribute to food preservation
• Explore enzyme-driven biochemical transformations in fermented foods

Module 3: Practical Fermentation Techniques

Estimated time: 8 hours

• Learn vegetable fermentation processes, including sauerkraut and kimchi
• Understand dairy fermentation methods used in yogurt and cheese production
• Explore microbial processes in bread leavening and alcoholic beverage fermentation
• Apply safe and effective home fermentation practices

Module 4: Environmental Factors in Fermentation

Estimated time: 6 hours

• Investigate how temperature affects microbial growth and fermentation rate
• Analyze the impact of salt concentration on microbial selection
• Understand the role of oxygen levels in aerobic vs. anaerobic fermentation

Module 5: Safety, Innovation, and Applications

Estimated time: 7 hours

• Assess risks of contamination and spoilage in fermentation
• Implement quality control measures for consistent results
• Explore modern innovations in fermentation technology
• Connect fermentation science to global cuisines and sustainable food systems

Module 6: Final Project

Estimated time: 10 hours

• Design and execute a home fermentation experiment (e.g., fermented vegetables or yogurt)
• Document the process, including environmental conditions and microbial outcomes
• Submit a report analyzing results with scientific and culinary insights

Prerequisites

• Basic understanding of high school-level biology
• Interest in food science or culinary arts
• No prior lab experience required

What You'll Be Able to Do After

• Explain the scientific principles behind microbial fermentation in food
• Apply fermentation techniques safely in home or professional kitchens
• Analyze how variables like temperature, salt, and oxygen affect microbial activity
• Identify and prevent contamination risks in fermented food production
• Connect traditional fermentation practices to modern food science and global cuisine