Take semolina in a mixing bowl add curd.mix well add1/2cup water and mix again keep aside for 15-20 minutes.

Now take the mixture and divide into three equal parts in separate bowl. Take a small bowl add green food colour add 1 tbsp water mix well.add this colour into one part of mixture.mix gently.

As same mix orange food colour in a bowl and add it in another part of mixture. Now we have tricolour mixture.take a pinch of baking soda add in green mixture add few drops of lemon mix gently.in the same way add baking soda and lemon foods in remaining two parts.mix well.keep aside

Take microwave idli maker mould Grease with little oil.first pour 1tbsp green mixture on a side carefully then add white mixture and then pour orange part as shown in bekow pic.put the mould in microwave safe bowl cover and cook just for 3 minutes. Demould it and serve with coconut chutney.