It's not that hard to dose out. Mix 10 grams of caffeine into 1L of water to obtain a 1% solution. Mix 100 grams of your primary solution into 1L of water to ob

It's not that hard to dose out. Mix 10 grams of caffeine into 1L of water to obtain a 1% solution. Mix 100 grams of your primary solution into 1L of water to obtain a 0.1% secondary solution. Every gram of secondary solution now has a milligram of caffeine. 2 tablespoons of secondary solution is roughly equivalent to a cola.