Hi, ive been trying to perfect my basic sponge recipe, ive now got a wierd colaboration from many sources that gets a good result ( i use half custard powder and half cornflour instead of plain flour and start of with a bisic merang and then add the yolks and dry ingredients) I find my cakes taste slightly salty even though i have added no salt. Does anyone know what causes this and how i could prevent it? i have a hunch my bicard soda is old if that helps.