Originally Posted by biorider
Maltodextrin with Crystal Light Lemonade rocks! It's easy and cheap to mix up a bottle with 300 calories, 'dex is about $1/pound and doesn't sludge out in the bottle. I haven't tried adding protein to it yet. I was using Hammer Perpetuem and Sustained Energy for double centuries and training. Both worked well for me, 'Dex is the main ingredient in both.
Arnie Baker Cycling is a good source for info on nutrition.
I've found that for summer, when it's hot, Cytomax works much better for me than Gatorade. Try the Citrus. It doesn't stain water bottles and you can mix it full strength without stomach problems.