Idli Dosa -- Confused

I allways get confused with the idli dosa batter when i keep it overnight to ferment...... since they look alike...and next morning my reaction is ..which is idli batter??????  and which one was dosa batter?????........But then i decided to keep them in different utensils...so that next morning i am not confused.....but that didn`t work for me...as usual i was confused....until i finally decided to label them.......
This time as i was looking forward to labelling....... with a little batter on my finger tip....i finally labelled them .
About the recipe.........that turned out to be a disaster !!!!!!!!!!