In a wok/kadhai heat 1tbsp oil.. add chopped garlic saute for 1 min then add the thick sliced onions. Then fry till it's pink. Then add the chopped capsicum. Fry. Add the sauces and sprinkle some salt and pepper. Add the slurry of 1tbsp cornflour with 1/2cup water. Mix well and make garlic sauce. Then add the fried babycorn and mix well and serve hot