Committee meetings at my place always begin with a round of hot drinks 
Some members commented that they liked the coffee I served, and I promised to write a post on it.
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I buy green beans from Urban Coffee. It costs $14 per kilo plus about $6 shipping (they can ship 2Kg for $6, so it’s best to buy 2 Kg at a time). I estimate that it ends up costing $20 per Kg of roasted beans.
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You can roast the beans in an oven dish. They WILL NOT come out all exactly the same colour, some will be darker, others lighter. I like that because it renders the coffee more complex.
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Pre-heat the oven to 225C, using fan bake if you have it. Put in 0.5 kg of beans in the dish. Put the disk in the oven and then stir every few minutes to ensure beans more evenly cook (there tend to be hotspots in the dish and some beans will cook a lot fast than others)
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You’ll hear a crack when the beans start getting light brown. Keep stirring.
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You’ll hear another crack when the beans start getting very dark brown (espresso style)
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When the beans are cooked to your taste, you’ll need to remove the chaff (the outer skin of the bean). Put some of the beans in a colander or siv and stir them so that the chaff comes off.
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Grind and enjoy !
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Oh yeah, there’s lots of smoke. Open all the windows and put a fan near the oven to blow the smoke out the window.
I usually do two roasts, a dark one and a light one then I mix them together. The beans stay good for weeks.