In a bowl, add sugar, salt and warm water. when dissolved add your active yeast and mix well

Pour the liquid mixture to your flour and mix till a dough is formed

Knead dough well for about 5min. Lastly add butter and message well on a greased surface

After it doubles in size, sprinkle some flour on a clean board.

Flatten the dough. Place your mashed seasoned fish and gently hold the edges. Roll ball till smooth.

Or use a cutter and cut two small circles. Place the mashed fish on the first and cover with the second circle and gently hold up the edges press hard to close the edges. I actually recommend this method for a perfect result. Another method is to roll out d dough flat place your fish roll out another dough cover it up and use a round cutter to make the circle filled shape

Place the doughnuts on a floured surface and allow it to rise in a warm place for about 10min. Then fry on medium heat till each sides are golden brown