I dunno about OP, but you can get home roasting machines that look a bit like a submarine that you throw the beans in and leave to roast. They’re not super che

I dunno about OP, but you can get home roasting machines that look a bit like a submarine that you throw the beans in and leave to roast. They’re not super cheap, but in the order of the price of a good grinder or coffee machine and confer enough cost savings to be worth it longer term.