Roast coffee beans at home.

Purchase green coffee beans (search online).

A Whirley-Pop works best for constant stirring of the green coffee beans over high heat.

Roast beans in a well ventilated kitchen (this produces a lot of smoke, so an outdoor grill side burner is ideal).

Heat and stir constantly until beans start to turn brown.

Stop the cooking process (after ~15 min) by pouring beans into a large bowl.

Let cool, grind, and enjoy!