Dissolve agar-agar in two tablespoons of luke warm water.
Mix watermelon juice,agar agar, and lemon juice.
Boil for about 2 minutes, mixing continuously.
Turn off the heat. Pour into the dish. Let this sit for about 20 minutes.
Now again dissolve agar-agar in two tablespoons of luke warm water.
Add evaporated milk, sweetened condenced milk, vanilla extract, whipped cream and a pinch of red food colour and mix them well. Pour it over the water melon mix.
Refrigerate for about three hours before serving.
Cut them by a heart shaped cookie cutter.