Rich and Creamy Tonkotsu Ramen Broth Recipe

Ingredients

• pounds pig trotters, split lengthwise or cut crosswise into 1-inch disks
• pounds chicken backs and carcasses, skin and excess fat removed
• tablespoons vegetable oil
• large onion, skin on, roughly chopped
• garlic cloves
• One 3-inch knob ginger, roughly chopped
• whole leeks, washed and roughly chopped
• dozen scallions, white parts only
• ounces whole mushrooms or mushroom scraps
• pound slab pork fat back