Seive together flour,salt,baking powder and keep aside
Beat together butter and sugar till soft then add in eggs ,vanilla essence,yoghurt and beat till creamy ..Add in flour mix and combine well.
Take about 1/4 cup of batter and add strawberry jam ,essencemix well…
Add the batter alternatevely on to the greased baking tin and swirl with a knife and bake @180 c for 50-60 minutes until toothpick inserted comes out clean.