I stick to John Berardis post workout drink, he did his Phd in Nutrition about it. He works as nutrional advisor for the canadian olympic team and other elite athletes.

50g of glucose to trigger the insulin response and 30g of whey protein.

I add frozen fruit (usually blueberries) to counter the acid buildup from the protein metabolism.

Since i turned vegan i use 20g of rice-, 10g of pea- and 12g of hemp protein powder. Amounts to ~30g of pure protein, magnesium + manganese from hemp is nice as well. Tastes worse, but costs half as much while being organic.