Kidney Friendly Comfort Foods compliments of Shire Pharmaceuticals and reviewed by a licensed dietitian, Cathi J. Martin, RD,CSR,LDN. I could not find rutabagas and have substituted turnips. Turnips are also lower in potassium. I used shoulder roast instead of chuck or rump. Olive oil instead of just vegetable oil. Phosphrous = 168. Serving 6.1 oz total with 3 of those ounces being beef. If you leach the turnips and carrots you can reduce the potassium by approximately 30 percent. Leaching is soaking in 10 times the amount of water to the vegetables for at least 4 hours. Discard the water and rinse again before using.