Yes, you can make coffee out of coffee beans. But the beans must be roasted and then ground. That's where the ground coffed we use comes from.
Well, chances are quite a few things were ground up and dissolved in water over the eons and centuries, but coffee with its stimulating effect and medicinal uses coupled with the fact it is appealing...
yes
well that is the question! i dont know mwahhahaha
Most auto/filter type coffee makers recommend 2 tablespoons of fine grind coffee per 8 ounce cup.