Add the required amount of salt to the corn puttu powder and make puttu mix using warm water (make sure it is not lumpy). Heat oil in a pan. Add the sliced onions, curry leaves and ginger-garlic paste. Sauté well. Add the dry masalas and salt. Pour in half a cup of water and stir till the raw smell of the masalas is gone. Add the shredded meat and stir fry till it is dry. Place 2 tablespoons of this mix in a puttu funnel. Layer with 4-5 tablespoons of puttu mix. Repeat till the funnel is full. Steam cook till done. Serve hot with pappadams.