- Combine jaggery with milk and mix it till jaggery dissolves completely Add colostrum milk to it and mix . Sieve the mixture to remove any impurities. Add cardamom powder and saffron strands.Mix once and transfer it to a cooker pan Fill the pressure cooker base with water and allow to heat as we do for idli . Place the pan with colostrum pudding inside pressure cooker and steam cook for 20-25 mins . Later take out the pan from the cooker and allow to cool the pudding. Delicious junnu is ready.