How to make real american coffee? 10point the beast?

I have a cuisinart grind and brew machine. It makes good coffee, but I prefer to grind the beans by hand in a mortar and pestle. Then I place these grounds in boiling water and strain them through a sieve, except they will all sink to the bottom of the pan after only a few minutes. I boil the coffee less than one minute. Using an electric grinder, such as in the cuisinart machine, more of the oil from the beans gets into the brew. Once I became accustomed to the superior flavor of the hand ground coffee, I did not like the automatic grind.