Boil some water in a saucepan and add salt (amount according to taste).
STEP 2
Add the chicken and boil on a low heat for approximately 1 hour.
STEP 3
Remove the chicken, reserving 1 cup of stock. Allow the chicken to cool down and then cut it into four pieces.
STEP 4
Melt 2 tbsp butter in a large pan. Add the chicken and fry until slightly browned. Remove and set aside trying to keep them warm.
STEP 5
Add the remaining 2 tbsp butter. Once the butter has melted add the flour and stir until the mixture turns slightly golden. Add the reserved stock, and stir constantly to avoid any lumps.
STEP 6
When the mixture starts to boil, add the vinegar, garlic, walnuts and seasoning. Allow to simmer on a low heat for approx. 5 minutes,