The process of coffee extraction what is the Mena reaction?

A few days before his death on St. Helena Island in 1821, his attendant, Marshal Bertrand, wrote about begging for it: "he asked for twenty times in the morning and asked me if I could give him some more coffee." "No, my lord, the doctor ordered you to drink only one spoonful of coffee. It's not time yet. You have a bad stomach. Drinking early will only make you vomit early. "he threw up nine times this morning.