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--- blog:coffee_blog:2022-05-15 [2022/05/21 12:03] – [Cooling] Phil Ide
+++ blog:coffee_blog:2022-05-15 [2022/05/21 12:09] – [Drum Roaster] Phil Ide
@@ Line 30: / Line 30: @@
 [{{ :blog:coffee_blog:genecafe.jpg?direct&400|Gene Café off-axis drum roaster}}] This machine takes a maximum load of 250g, as opposed to the 250g minimum load of the flat roaster, meaning I can roast smaller quantities with ease. The drum is off-axis, so as it rotates it also tips with one end down and ending with the other end down. This ensures the beans don't get stuck in part of the drum, and also helps to ensure they are continually mixing amongst each other. Partitions inside the drum force the beans to roll and jumble rather than just sliding as the drum rotates.
-Another major feature of this machine is that it has an exhaust. You can see this at the top of the black box-like structure on the left. That structure collects huge amounts of chaff, another excellent feature. I attached a pipe reducer to the exhaust which took reduced from 100mm to 80mm (the size of the exhaust), and then attached a 100m expandable metal ducting tube which carries all that nasty steam, oils and aromas out of the kitchen. By the way, if you think roasting coffee smells of coffee, you're mistaken. It smells of cooking hay, or possibly peanuts.
+Another major feature of this machine is that it has an exhaust. You can see this at the top of the black box-like structure on the left. That structure collects huge amounts of chaff, another excellent feature. I attached a pipe reducer to the exhaust which expanded the bore from 80mm (the size of the exhaust) to 100mm, and then attached a 100m expandable metal ducting tube which carries all the nasty steam, oils and aromas out of the kitchen. By the way, if you think roasting coffee smells of coffee, you're mistaken. It smells of cooking hay, or possibly peanuts.
-This machine is by no means a perfect machine. Although it has digital temperature control, it measures the temperature of the exhaust. A good machine will also measure the temperature of the beans. Comparison of these two measurements tells you what is going on inside the roasting chamber much more than eyeballing the colour of the beans, and allows you exquisite control over the roasting process. As it only measures the temperature of the exhaust, you still have to eyeball and use the exhaust temperature as a guide.
+This machine is by no means a perfect machine. Although it has digital temperature control, it measures the temperature of the exhaust. An excellent machine will also measure the temperature of the beans. Comparison of these two measurements tells you what is going on inside the roasting chamber much more than eyeballing the colour of the beans, and allows you exquisite control over the roasting process. As it only measures the temperature of the exhaust, you still have to eyeball and use the exhaust temperature as a guide.
-All that said, it's not cheap, but a lot cheaper than one of those machines that can read both temperatures. I have neither the space nor the money for one of those things, and they're best setup in a shed, garage or basement - none of which I have. Still, in nice weather I can take the machine outside avoid any of the nasty smells filling my home.
+All that said, it's not cheap, but a lot cheaper than one of those machines that can read both temperatures. I have neither the space nor the money for one of those things, and they're best setup in a shed, garage or basement - none of which I have. Still, in nice weather I can take the machine outside and avoid any of the nasty smells filling my home.
 ===== Roasting Temperatures =====