Trim excess fat from oxtail.
Wash with lime, vinegar, and water. Rinse and pat dry.
Season the Oxtail
Add all dry seasonings and liquid seasonings to oxtail.
Mix thoroughly until fully coated.
Brown the Oxtail
Heat oil in a deep pot over high heat.
Brown oxtail on all sides.
Build the Braise
Add hot water to leftover marinade in bowl, mix, and pour into pot.
Add onion, scallion, thyme, and garlic.
Slow Cook
Reduce heat, cover, and simmer for 2½–3 hours.
Add hot water as needed and adjust seasoning midway.
Cook until oxtail is tender.
Shred the Oxtail
Remove bones and shred meat.