Egg White Powder is high biological value protein that's lactose and dairy free.
The whites contain most of the protein in the egg, with no fat or cholesterol. They also typically contain less calories than other protein sources.
Egg white powder is made by separating whites from yolks and drying them into a powder. The powder is then pasteurised so it's safe to drink from salmonella and the avidin protein. This process is done at a high heat which is beneficial also as it has been shown to increase digestibility of egg protein.
With the water removed 1kg of egg white powder contains the whites from about 260 medium sized eggs, meaning this product is very economical.
It's from free range chickens too.