Sup Buntut Sederhana

Bahan-bahan (8 porsi)

• 2 1/2 pounds oxtails ((1.1 kg))
• 12 cups water ((2.8L))
• 1 large onion ((cut into wedges))
• 1 medium Chinese turnip or daikon radish ((cut into large chunks))
• Salt ((to taste))
• chopped cilantro ((to garnish))