10 Top Affordable Protein Sources Canned Tuna [40g protein per can] Eggs [6g protein per egg] Pork Mince [20g protein per 100g] Chicken Breasts [31g protein per 100g] Frozen Wild salmon [25g of protein per 100g] Peanut butter [23g protein per 100g | 5.3 protein per serving] Greek Yoghurt 2%[…]