You will need Cocoa Beans, hot water, a french press, and cream and sugar. You can Buy Cocoa Beanson this link.
Step 1: Cocoa Beans - Step One
First grind your cocoa beans into nibs, you can use a grinder, or bullet. Note you don't want them powdery.
Step 2: Boil Water
You want to boil water, then put your ground cocoa beans in the french press, and add the boiling water. You will want it to sit for about 10 minutes.