Why would you filter out fatty acids if those are the most valuable in milk from grass-fed cows? Milk from grass-fed cows shows substantially higher amounts of CLA and omega 3 fatty acids, often referred as fat burners. Protero Weide Whey is a whey concentrate that preserves the fatty acids to a relatively high amount, yet offering a high protein content of 79%. No additives other than sunflower lecithin for perfect solubility.