I really do like a good, strong, black coffe and I mastered the caffeine usage to keep me awake if I want, my recept:
Take a huge cup (like 400ml-500ml) and make a really, really, really strong coffe BUT before you pour it with water, don't forget to use sugar, because it would cause you way too bitter taste in mouth and you would have to drink a lot to cover that taste (I'm considering the fact that you made a really strong coffe(I normally do not use sugar FYI)). So you pour it with boiling water, but only to like 250-350ml of the cup. Then you use milk, yes milk. Why? Because the drink won't be so hot and milk will keep you from starving as well. And then you can in fact instantly drink it. It tastes like a bitter capucino or something, which is not totaly my "cup fo tea" but it definetly works against sleeping :hehe:
