Time: 1:36:57 AM HST
Topic: HOW DO I MEASURE GREEN TO ROASTED? How many green coffee beans do I need to roast?
Well we have formulas that are within some range accurate for determining how many green coffee beans one must roast to get a certain amount of fresh roasted coffee.
Coffee is very sensitive to the humidity of the environment it is in and it is also prone to take on (and sometimes give off) moisture from the air around it.
Different states of coffee can have an effect as well. Some are smaller in size, some may have pits or cracks or other open surfaces that will affect how the roast will heat and burn the coffee as a group.
Another variable is the roaster you use, and whether you kept the coffee well sealed between roasting sessions.
Also, if you roast light, less will be burned away, if you roast dark, more will be burned away.
But, that said, the following will give you a fairly accurate way to calculate what you need in our organic green coffee beans to yield a known amount of roasted....
In this case, the questioner wants to determine how much green coffee bean will yield 4 total 4 oz bags of coffees or 1 pound total of roasted coffee.
In the chart below you will notice a formula of “Roasted to Green” (1 * 1.25 = 1.25) or 1.25 pounds of green will be needed for 1 pound of roasted yield.
Most of the time we are limited by constraints of our roasters. If you use a home unit that will allow you to only roast 1/2 cup of green bean at a time, you should expect .4 cup of roasted or 2/5 of a cup yield from the 1/2 cup green you started with.
If there are 4 Tablespoons of coffee in an ounce of coffee, 1/8 pound or 2 ounces will yield 8 cups perked.
If a cup of roasted coffee is the equivalent of 8 ounces and there are 4 Tablespoons in an ounce, a cup of roasted coffee will yield 32 tablespoons or about the same in cups of coffee (for heaping you might want to round that down to 30 cups of coffee).
For the above, if we will get 2/5 of a cup of coffee from the 1/2 cup of green coffee bean we started with, we will get about 12 cups of coffee -- or one big pot from the limitation of the roaster only accepting 1/2 cup of green in its compartment...
I have looked at measurements on the web, and there are differences in what they say is in an ounce and what I measure. I will re-look at this and revise as time permits as far as how far your roasted coffee goes to make how many cups of coffee from it. For example, the on-line sources claim 16 tablespoons comes from 1 cup of dry material and that there are 8 ounces in a cup (or 2 Tablespoons in an ounce). Just do your own checking and realize we think our data is accurate but you might want to do your own calculations!
