for full size jute 40-75kg bags but also starting at $15/kg
Alchemist John’s Oven Cocoa Roasting Log
In general, if you try oven roasting, you will start hot (350-400 F) for a short amount of time and slowly lower it to your target temperature (275-300 F). This is for about 2 lb/1 kg of beans. The more you are roasting, the higher your initial temperature can and has to be and the time will probably be a little longer.
Remember, you want to roast the cocoa beans, not bake them. This is how that looks:
Whole cocoa beans
375-400 F 5 minutes
350 F 5 minutes
325 F 5 minutes
300 F for 10-15 minutes or until done*. Look for the aroma of baking brownies and/or pops. Both are good indicators you are there.
*For an even better indicator of a complete roast, use an infrared thermometer and roast until the beans show 250-260 F. Make sure you stir the beans before taking your reading so you don’t have a high bias.