but gram for gram of protein, im pretty sure that £20/kg of casein (80% protein) works out cheaper than a kg of 15% cottage cheese.....
tesco plain bog-standard cottage cheese= £0.75/300g
15/100 * 300 = 45g protein
45g protein= £0.75
1000g/45g= 22.2
22.2*0.75= £16.6 per kilo protein
Ok so...