Clean your oxtails and then add 1 tbsp avocado oil and add all of your seasonings; oxtail seasoning, jerk paste, brown sugar, garlic + onion seasoning, garlic paste and thyme. You can let these marinate for a few hours or over night.
Too a large pot add your 2 tbsp avocado oil and turn stove to medium high.
Once your oil is hot, sear your oxtails in batches. Then place to the side.
In the same pot (you might need to spoon out or wipe out SOME of the oil and really burnt pieces, not all of it because thats FLAVOR) add your onion. Sauce for 3 minutes.
Add in your tomato and garlic paste, cook stirring for 3 minutes.
Pour in your beef stock, mix well and scrap the bottom of the pot to get those bits mixed in. Carefully add you oxtail back in plus any left over juices. (I even poured in a little bit of water where I marinated the oxtails in to get those flavors too) Cover and cook for 3-4 hours. (I also sprinkled in a little bit more oxtail and garlic onion blend.)
Now toss in your chunked sweet potatoes and cook for another 15-30 minutes, until fork tender. The last few minutes add in your butter beans.
Add in your cornstarch and water mixture and cook 2-3 minutes. This should thicken up your gravy.
Add some fresh thyme and enjoy!