Pork Belly Sisig

Ingredients

• Juice of 1 orange
• 3 garlic cloves, minced
• 2 tablespoons minced peeled fresh ginger
• 1 fresh lemongrass stalk, tender inner white bulb only, minced
• 1 tablespoon peanut oil
• 1 tablespoon Chinese chili paste
• 1 tablespoon kosher salt
• 1 teaspoon freshly ground white pepper
• 1 teaspoon Chinese five-spice powder
• 2 pounds meaty pork belly in one piece, scored in a crosshatch pattern
• 2 carrots, cut into chunks
• 2 celery ribs, cut into chunks
• 1 large leek, white and pale green part only, thickly sliced
• 1 small bunch of cilantro
• 2 bay leaves
• 1 strip of orange zest
• 1 quart pineapple juice
• Kosher salt
• 2 cups chopped celery leaves
• 1 1/2 cups finely chopped shallots
• 1 cup thinly sliced scallion greens
• 1/2 cup sherry vinegar
• 1/4 cup calamansi, yuzu or fresh lemon juice (see Note)
• 1/4 cup minced cilantro
• 3 serrano chiles, minced
• 1 garlic clove, minced
• Freshly ground pepper
• 2 tablespoons peanut oil