In a wok, heat oil over medium heat

Add garlic and cook until aromatic

Add beef shanks and pan fry until cooked about 2-3 minutes each side.

add soy sauce, water, whole peppercorns and bay leaves. Bring to a boil

After boiling, bring down the heat to a simmer and cover the wok. Simmer for 1.5 hours or until beef is tender.

remove cover from the wok. Add vinegar and sugar. Let it boil again then cook for another 5 minutes.

Place in serving plate and enjoy!