In a mixing bowl combine biscuit crumbs, desiccated coconut, cocoa powder, vanilla essence or rum
To the above add condensed milk gradually and mix gently. You may add toasted and crushed walnuts at this stage
By now the mixture would have come together to form a ball.
Take two teaspoonful of mixture and shape into a ball.
Repeat above step and form small balls for.the entire mixture.
Coat each ball with desiccated coconut.
Truffles are ready.
Refrigerate for an hour and serve.