Freeze whole pieces of chicken on a baking sheet for about 40-60 minutes.
Remove from freezer and cut thin shavings of the meat. Set aside.
Chop onion finely and mince garlic.
Use a casserole dish, or lasagna size pan (we prefer a ceramic one). Put in chopped onions, garlic, oil, masala, brown sugar, and lemon juice. Mix thoroughly.
Add and coat the chicken.
Cover with lid or aluminium foil. Bake for 20min.
Remove from oven and mix well to be sure all meat is cooking thoroughly.
Return to oven for another 10 minutes. Remove lid and mix again. It should look quite watery.
Return to oven and cook for another 20min.
Use the meat to make fajitas, donairs, burritos etc. We like it with in a large whole wheat flour tortilla with green salsa, grated cheese, finely chopped iceberg lettuce, tomatoes, sweet red peppers, garnished with some finely chopped coriander and a squeeze of lime!