Cheddar & Sour Cream Mashed Potatoes

Idaho potatoes 64.1% , buttermilk 18.0% , salt 0.6% , vegetable oil 0.6% , soya bean 0.6% , maltodextrin 0.6% , cheddar 0.6% , blue cheese 0.6% , sour cream 0.6% , skimmed milk powder 0.6% , natural flavouring 0.6% , dehydrated onion 0.6% , monoglycerides 0.6% , calcium stearoyl lactylate 0.6% , sugar 0.5% , skimmed milk 0.5% , E160c 0.5% , E160b 0.5% , freshness preserved by sodium acid pyrophosphate 0.5% , E222 0.5% , E306 0.5% , E330 7.5%