Cut oxtail into bite size pieces, slice onions, and carrots, crush garlic, chop tomatoes and finely chop escallion.
Trim away excess fat and place oxtail pieces in boiling water for 2-3 minutes to scald. Dry well on absorbent paper and coat with cornflour. Sprinkle with salt and black pepper.
Heat oil in a heavy bottom pot and brown oxtail on both sides; pour off excess oil.
Dice bacon and fry for a few minutes.
Return oxtail to pot with bacon along with carrot, onion, garlic, tomatoes and hot water.
Cover and simmer gently for 3 hours or until oxtail is almost tender. (A pressure cooker may be used to shorten the cooking time).
Add more liquid, if necessary, and correct seasoning.
Cover and simmer for a final 20-30 minutes.
Add the Grace Butter Beans and allow to heat through.