The way we drink coffee today is the result of long-term empirical research and countless coincidences. If you were to tell someone today that cherry pits are fermented, dried, roasted, ground, and then an extract is prepared with hot water, they wouldn't immediately think of coffee.
It's almost a miracle that this perennial plant has achieved such prominence among cultivated plants. On the one hand, it's certainly due to the effects of caffeine. On the other hand, it's also due to the cocktail of molecules such as various chlorogenic acids, amino acids, and sucrose, which, through the heating process of roasting, produce fascinating new flavor and aroma compounds.
We owe the moka pot, the disc grinder, the drum roaster, the cold brew method, and much more to the ingenuity of many pioneers. At the same time, these numerous successes and quality improvements in the agricultural, post-harvest processing, roasting, and extraction sectors of recent years are leading to a certain complacency in thinking. This means that while processes and methods are constantly being refined and understood, the necessary distance to explore entirely new avenues is increasingly lacking. Are we, therefore, trapped in a bubble of the same old thought patterns? Perhaps we aren't even asking the relevant questions because we lack the motivation to do so?
But it is highly likely that the upheavals caused by climate change and the geopolitical impacts on supply chains will bring entirely new approaches to coffee production – whether these will be positive or negative probably depends on expectations (hurdle or opportunity?). In any case, there is now significant activity regarding the energy source for roasting machines. For a long time, natural gas was the gold standard – and admittedly, roasting with gas has worked very well so far. The use of gas for heating processes in the food industry will continue for some time, but the countdown to its end is already underway. And as always, when you think you've reached the end of your rope, creativity takes center stage and established norms are questioned. The famous alternatives emerge – with all their teething problems. This means that a transformation process will (have to) begin.
The young Prague company Typhoon Coffee Roasters is forging ahead with its innovative roasters. These are electrically heated. For a long time, electric heating was considered impractical for coffee roasters because the energy transfer was deemed too slow. Therefore, in Prague, they intensively studied the efficient energy transfer between the heating element, the roasting process air, and the coffee beans. We were able to see this for ourselves during a visit to Prague. At the same time, the venerable roasting machine manufacturer is also working on... Probat Heating technologies using hydrogen. Converting all gas-powered roasters is expected to be the mammoth project of the next ten years.
Alternative energy sources bring with them an avalanche of question marks, which guarantee significant effects on the final product – the roasted coffee beans.
So it's going to be exciting.