The Fresh Roast SR300 is a great "starter" machine for the home roaster who wants to taste truly fresh roasted coffee. The SR300 replaces the original, little workhorse, the FreshRoast 8, with over 60,000 units sold worldwide. The SR300 will roast a maximum of 5 ounces (2/3 cup) of green beans in 5 - 7 minutes, depending on the darkness level you desire. The clear glass roasting chamber allows you to watch the beans develop before your eyes. You can arrest the roasting process anytime during the roast by tapping the "cool down" button when you have achieved the desired depth of roast. Its recommended that you allow the beans to cool and "cure" at least 5 hours before grinding and brewing. Controls are digital with ability to add and subtract roasting time, and ending the roast by entering the "cool down" mode.