Recovery food does not have to be in the form of a protein supplement.
Why not elaborate on your pre and post ride nutritional intake. That way you are likely to get better advice.
If you are feeling ill, it could be that you are not getting enough carbs. Low carb diets, mean low glycogen stores, which are associated with bigger increases in cortisol levels which will suppress your immune cells.
2-4 hours before a big ride you should think about fueling up with an appropriate meal. A couple of whole grain rounds of sandwiches would probably do it depending on your size. fill with chicken, cheese egg or peanut butter and salad or something like that. That way you have good carbs, and also protein plus a little fat.
1-2 hours before you could have a snack. fruit, cereal bar and a drink of diluted fruit juice.
After 1 hr of exercise you will be depleting muscle glycogen depletes quite quickly. So you should think about eating while you ride. 30-60g of carb every hour will help, it matches roughly the rate at which your muscles will take up the carbs. Make them cerial type carbs, not white bread.
Post exercise (within 2 hrs) you should be looking at eating something like jacket potatoes with tuna or baked beans. This will help recovery. You will need to replace the glycogen in your muscles. Eating the carb with protein helps do this more efficiently.
And like I said before. drink.