Ok I am going to make it harder now
Starches/sugars etc all come with a glycemic index GI. The higher the GI the faster it hits the blood stream. For example dried mashed potato is about 80 I think so is great as a pick me up and get you back on your feet but what about the stuff (low GI) for bed time dinner so you keep warm at night and you dont get hungry and cold at night, as we all know thats not nice at all.
So 2 carbs you got to take what would they be?
For me Dried potato and for sleepy time or brecky stuff like instant oats.
Any others spring to mind?