The best answer: both! Mutton is better. Sheep kidney (sheep kidney) has the effect of tonifying kidney, benefiting qi and essence. Indications: kidney deficiency, strain, lumbago and leg pain, soreness of feet and knees, deafness, thirst quenching, impotence, frequent urination and drowning. = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =. Sweet, salty and flat. It can slightly tonify kidney-qi, promote diuresis and relieve pain. "This prescription can only be used under its guidance."