Be sure to mix in protein. The best post workout protein is whey. Make sure you purchase a good whey, they aren't all the same. Most companies sell whey concentrate which isn't all that good. Check you label to see what it is.
Current research shows that best whey is hydrolyzed whey.
It is hard to find and has a nasty taste. Your next best choice is cross flow whey. Your post workout carbs grams should be your weight in kilos. That would mean a 90 kilo lifter would need 22.5-30 grams of protein. This more specific to you needs.