Mix flour, salt, baking soda and baking powder and filter them twice so that they blend in together. Put sugar in mango pulp and grind, also add apple sauce and oil to it and mix well. You can also use ripe banana(mashed) instead of apple sauce.
Beat this mix by adding milk/buttermilk a little at a time.
Preheat the oven to a temperature of 100 degrees.
Place muffin on the tray or place paper cups. Take out mixture with a spoon and fill 2/3 rd of the cups. Fill all the cups in this manner.
After the oven is heated put the tray in it to bake the muffins. Set the microwave for 12 minutes. Bake muffins till they turn golden brown.