In a container, place your drumsticks and add all the marinade ingredients. Allow them to marinate for 24 hours or more in the fridge.
After you are done marinating the chicken, season the drumsticks by dipping them in a paste of these three spices: Black pepper, Royco allspice and Shalimar tikka masala. After that, proceed to deep fry them until cooked through. Remove from the heat and set aside.
For the sauce, add the red onions and garlic Into a saucepan and let them cook until fragrant. Be careful not to burn the garlic. Then, add the ketchup, sugar, vinegar, Worcestershire sauce, cayenne pepper, black pepper and Guinness Stout.
Cook this down for about 10-15 minutes until the sauce thickens and all the flavors come together. Once simmered down, add your drumsticks into the pot and let them simmer on low heat for about 5-7 minutes..
Add your finely chopped coriander just before taking them from the heat. Dig in.