Oven-Baked pork skewers with Teriyaki Sauce - jikoni

Ingredients

• 1-kilo pork shoulder, sliced lengthwise
• 1/3 cup soy sauce
• 1/3 cup ketchup
• 5 tablespoons lemon juice
• 4 tablespoons brown sugar
• Ground pepper, to taste
• 2 garlic cloves, crushed
• 1 tablespoon olive oil (or another kind of oil)
• 12 skewers
• 1/2 cup low-sodium soy sauce
• 3/4 cup water
• 3 garlic cloves minced
• 1 tsp grated ginger
• 2 Tbsp cornstarch
• ¼ tsp red pepper flakes