Chocolate Marble Ice Cream

INGREDIENTS:
Basic vanilla ice cream : 1 cup
Ordinary dark chocolate : 2 cups
Icing sugar : ¼ cup
yellow of egg : 3
Butter : ¼ cup
Fried walnuts, badam and pista ( broken ) : ½ cup
Vanilla : ½ tsp
Chocolate piece base
Bourbon biscuit : ½ kilo
Melted butter : ¼ cup

METHOD:

Break the biscuits and mix with melted butter.Place the biscuit mix in a 9" spring shaped pan at the bottom and refrigerate.Melt chocolate on a low flame in a saucepan. Add butter and remove the pan from the stove.Add yellow of egg and cook on a medium flame till the contents boil.Remove from the stove, add icing sugar and beat well.Let it cool. Add nuts or vanilla and stir well.With a spoon, add sauce and ice cream alternately over the crust.When the mold is filled, cover with a cloth and freeze overnight.