Mix the coffee in water, dissolve and set aside.

In a saucepan, combine the milk, custard powder and sugar without any lumps and bring to boil. Cook till thickened and allow to cool.

In a square pudding pan, dip the biscuits in coffee and layer the bottom.

Pour a part of the custard to form one layer.

Dip the biscuits again and layer, pour the custard on top.

Continue till the biscuits and custard is exhausted, the custard layer must be at the top.

Sprinkle with chocolate chips and refrigerate for a couple of hours till set.

Slice and serve!!!