Can you give a quick overview of the coffee roasting process?
Sure thing. We roast all of our coffee on a Probat roasting machine that is made in West Germany. A very well built and sturdy machine. We’ve been roasting on this machine since we started. We roast 10kg batches of beans–well, seeds is what they actually are–and monitor the roasting profile with roasting software made by a company called Cropster. It allows us to maintain consistency and also satisfies the nerd in us.… We do about 30 batches a day give or take, so at the moment we are roasting around 700kg of coffee per week.
Roasting coffee is essentially about achieving an even roast throughout the entire bean. You want the inside of the coffee bean to be cooked enough and the outside of the bean to not be very dark (well we want that) because undercooked coffee tastes grassy/malty and overcooked coffee, the term is ‘roasty’, tastes sehr shite – like ashtray and burnt wood. The notes that you see written on our coffees are created through all of the complex chemical reactions that take place during the roasting process due to the high temperatures. The reason that coffee, and most things you cook, turn brown initially is because of the maillard reaction, which is reducing sugars reacting with amino acids. This starts as an endothermic reaction at around 130°C and the beans begin to go from green to hay colour. As the bean temperature rises to around 150°C the reaction changes to an exothermic reaction and the beans quicken in their travels to browning. Then around 190°C caramelization begins, which is essentially reducing sugar and turning the coffee a darker brown.
At Field we focus on a few origins for our coffee. The ones where we have the strongest ties and relationships, and they are Brazil, with the Olievera family in Minas Gerais, in El Salvador with the Batlle family and then in Colombia where one of the Batlle family and us were going to set up a company and coffee farm, but currently its just buying from producers there.
Does the political situation there affect the coffee production?
Interestingly, not really. But the Suez Canal situation, that really slowed things down.
Instead of trying to affect the political situation, we focus on what’s best for a farmer. A lot of places talk about this direct farmer to roastery relationship and how great that is, but the thing is that’s only good if the farmer says it’s good for them. If you go to a farmer and say “I’d like to buy your entire crop for more than you’d usually sell it on the commodity market” then you’re doing a good thing. That’s a more stable thing for the farmer. But if you go there and say “I just want the best coffee you can supply from your farm” it’s a different story. No farm only produces top quality, because each harvest will be different. If you’re a hyper quality focused business you’d buy the top grade coffee, not the middle and bottom, and leave the farmer with all the lower quality crop. That’s where these importers can go in and have more power to help – they have so many clients that they can buy not just the whole crop of one year’s harvest, but commit to the year after and the year after that. That provides a more financially stable service to the farmer. Of course that means sometimes the quality is lacking. So as a roasting business, you have these sorts of decisions to make when it comes to the term “sustainability.”
Also, before you can even begin to talk about that you need to also be looking at your own business and if you’re actually paying your staff more than minimum wage and ask yourself if you’re paying your staff a living wage first.