Vietnamese Pork Meatballs in Tomato Sauce (Xiu Mai)

Ingredients

• 500 grams ground pork
• 1 small onion (finely chopped)
• 2 cloves garlic (minced)
• 150 grams jicama (peeled and grated)
• 100 grams carrot (grated)
• 4 tablespoons cilantro (chopped)
• 2 tablespoons oyster sauce
• 2 tablespoons fish sauce
• 1 tablespoon cornstarch
• 1 teaspoon sugar
• 1/2 teaspoon ground black pepper
• 1 tablespoon vegetable oil (for frying)
• 1 tablespoon vegetable oil
• 120 milliliters tomato sauce
• 240 milliliters chicken broth
• 1 tablespoon sugar
• 2 tablespoons cornstarch slurry (mixed with 2 tbsp water)