Mexicali Corn Casserole

• 1 garlic clove (crushed)
• 1/2 monosodium glutamate (optional)
• 400 gr vegetables (sliced)
• 120 ml stock (light)
• 30 ml peanut oil
• 16 ml oyster sauce
• 16 ml water (cold)
• 10 ml soy sauce
• 5 gr cornstarch
• 5 ml sesame oil