Video: https://www.tiktok.com/@distilledscience/video/7547806013924101407
Transcript
If you like good chocolate but hate spending money, you're going to love this new science. Have you ever wondered why a brand like this can charge $28 for a single bar of chocolate? Or why they can describe the aromatic profile of pure chocolate as having notes of licorice, spices, and wild citrus. It's not just them being snooty. Chocolate is sort of like beer. The cocoa beans are fermented. After harvest, cocoa beans are piled up on farms and then tiny bacteria and fungi from the environment spontaneously kick off a party. They feast on sweet pulp, creating heat and acids. This crucial process transforms bitter, raw beans, inedible as is, into flavor precursors, making them ready for delicious chocolate. But here's the challenge, unlike beer, which uses specific strains of yeast. This party is spontaneous, inviting whatever microbes just happen to be hanging around the farm, so flavors can be very unpredictable. One batch might be amazing, and the other just meh. This lack of control limits how consistently we can be able to be very unpredictable. get those fine flavors, leading to increased costs. So, in this incredible study, scientists set out to crack chocolate's flavor code. Their mission? To understand and eventually control this microbial party so that we can eventually make amazing chocolate every single time. They went to Coco Farms across Columbia to spy on real-world fermentations. They meticulously tracked two parameters like pH and temperature levels, both inside and outside the beans, and used a panel of expert casters to confirm that these drove the resulting flavor, and that these physical factors were driven by specific species of fungi and bacteria. But then they went further. They took those key species that led to fancy chocolate and used them to ferment their own beans and make their own chocolate. Applied science. The results showed the same temperature and pH progression as the good stuff, and the panel of expert tasters said that it contained the same fine flavor notes. This could lead to a future And even cooler, we might be able to start experimenting with new strains of bacteria to produce never-before-seen flavors. I'll keep you updated.
Additional notes
❓POLL: What’s your favorite brand of chocolate? Bonus points for rarer ones that people might not have heard of! 👉 Note: Not ALL of the better taste of fancy chocolate comes from the fermentation process. Part of it is nicer quality beans, better quality controls, and other ingredients. That being said, we wouldn’t NEED as much quality control if we could better control the randomness of the fermentation process! 📚STUDY: DOI: 10.1038/s41564-025-02077-6 #science #stem #chocolate #sciencenews
References
- Chocolate fermentation/flavor study; title not listed in workbook. DOI: 10.1038/s41564-025-02077-6, https://doi.org/10.1038/s41564-025-02077-6