Step 1

In a bowl, mix the condensed milk with the cacao powder very well.

Step 2

Crumble in the biscuit using a mixture of small pieces and crumbs, and combine well, ensuring all the biscuits are coated.

Step 3

Spread out a large piece of plastic wrap on the counter, and spoon the mixture in the middle.

Step 4

Mould it into a log shape by wrapping the cling film around it and twisting at each end.

Step 5

Cover the log with foil and freeze for at least 8 hours or preferably overnight (depending on the power of your freezer, the 8 hours may not be enough).

Step 6

To serve, unwrap the foil and start peeling the plastic wrap up to the point you want to cut, then cut 1/2 inch to 1 inch thick slices with a sharp knife that has been dipped in hot water. Serve immediately