Mapo Tofu (Sichuan Braised Tofu with Pork)

Ingredients

• 1 pound soft tofu
• 1-1/2 cups chicken stock
• 3 tablespoons Chinese black bean sauce with chile
• 3 tablespoons soy sauce
• 4-1/2 teaspoons cornstarch
• 1 tablespoon Szechuan peppercorns
• 3 tablespoons garlic, minced or smashed
• 1 bunch scallions, thinly sliced, white and green parts separated
• 1-1/2-inch knob fresh ginger, finely chopped
• 2 to 3 tablespoons peanut or grapeseed oil
• Toasted sesame oil
• 1 pound ground pork
• 1 bunch kale, roughly chopped