I cook curry with curry power. (This kind.) They said pour it in water under medium heat. Sure enough after some time it starts thickening. When it is thick enough I considered this ready to eat.
However what is contributed to make the curry from "raw" state to the ready to eat state? I think the thickening is because of something in the powder is "cooked" so wouldn't increasing the temperature hasten this process? And another things that contributes to the thickening is the water evaporation, so if I add very low amount of water from the start is that means I don't have to wait as long as the higher amount of water?
What I am guessing from my many tries is that, after certain amount of time where the powder is "cooked" from this point onwards you only wait for the water to reduce enough to get thick. If this is true perfectly calculated curry should aims the water amount for when the powder is cooked, water is at the right amount so it is thick enough.