The Science of Chocolate 

ESTA GANCI

Esta Ganci

Teacher - Food Studies 

Year 11 Food Studies students recently stepped into the world of artisan chocolate-making with a visit to Ratio Cocoa, a respected local micro-batch chocolate maker in Brunswick East. This hands-on learning experience took students beyond simply tasting chocolate — they examined the science, economics and ethics behind every bar.

From Bean to Bar

During the visit, students traced the journey of cocoa beans from harvest through to finished product. They observed key stages of cocoa bean processing, including sorting, roasting, winnowing, grinding and tempering. The session connected directly to their learning in food studies, highlighting how temperature control, particle size reduction and fat crystallisation influenced texture, flavour and appearance.

Cost, Fair Trade and Sustainability

The excursion also provided an opportunity to explore the global cocoa industry through a critical lens. Students examined:

• The true cost of producing quality chocolate

• How pricing impacts farmers and producers

• The role of fair trade certification

• Ethical sourcing practices

• Environmental sustainability within the cocoa supply chain

These discussions encouraged students to think carefully about consumer responsibility, global inequity and the complexity of food production systems.

Analysis: A Scientific Approach to Tasting

A highlight of the visit was a structured sensory analysis session. Students tasted chocolate made from beans sourced from different regions of the world and evaluated variations in:

• Aroma

• Flavour profile

• Texture