In a pot boil the chicken thighs and once boiling point is reached, remove from heat and throw the water
Then add water back in the pot along with one onion, the cinnamon sticks, salt and pepper
Now bring to boiling point then reduce to low heat, cover with a lid and cook for 20 minutes
Meanwhile wash and hash the coriander, cut one onion in small pieces and crush the garlic cloves
In a pan on medium heat, add your butter and when melted add the sliced onion, the crushed garlic and the hashed coriander
Stir from time to time until the mixture starts softening then turn off the heat from under the pan
Once your chicken is cooked, remove it from the pan, peel the thighs in small chunks, and pour them back in the pot
Then add the mixture to your pot
Stir well, close the lid and let it cook for 5 mins
Afterwards add the leaves to the pot, close the lid and stir from time to time until the leaves darken
Add the lemon juice and half of the vinegar, close the lid and bring them to boiling point
Once the mixture starts boiling turn off the heat
Cut the last onion into small pieces, put them in a separate bowl and pour over it the remaining half cup of vinegar (this will be our vinegar and onion sauce)