Boil white part of water melon in pressure cooker along with 1 cup water. Take 3 whistles at medium flame.

Now mess white part of water melon and cook in wok till it's all water dries.

Now add khoya and mix well.

Add grated jaggery and cardamom powder.

Cook till it become thick and leaves side of wok.

Water melon rind halwa is ready.