-In a skillet heat the vegetable oil -Season flour with a bit of the ground black pepper and salt. Also season lamb shanks with ground black pepper and salt. Do all this whilst oil is heating. -dredge the seasoned lamb shanks in the seasoned flour and fry in oil turning regularly till all sides are brown. -transfer lamb shanks into a casserol dish or crock pot and put aside -brown a teaspoon of flour in the same oil used in browning the shanks -sautee onions in oil till translucent, add garlic, ginger, chopped chillies, parsely flakes, bay leaves and cajun seasoning. Stir till well mixed and allow to fry for about 2 mins. -add tomatoes to the mix and simmer for about another 2 mins. -add carrots, green beans and oyster mushrooms -season mixture with salt and remaining black pepper to taste -allow to simmer for another 2 mins -transfer sauce onto browned lamb shanks in casserol dish/crock pot and cover with lid or aluminium foil. -cook in oven that has been preheated to 400 degrees for about 11/2 hours. turn meat on interval to cook all sides. -cook till meat is all tender and ready to fall off bone Serve with rice, pasta, couscous, potatoes, etc.