Put the potato slices in a saucepan, cover with water and boil until just tender, 10 to 15 minutes.

After 3 or 4 minutes, drop in a potato slice.

Cooking time is determined by thickness, of both the potato slices and the fish.

Put the remaining potato slices on top - they should overlap slightly.

Add at least 2 tablespoons salt and the potato slices.

Layer a third of the potato slices in the dish.

Heat the oil in a skillet; when it is quite hot, add the potato slices and garlic.

When the oil was hot, he dropped potato slices into both pans with some onions.

Repeat until you have 5 potato slices holding 4 layers of fish.

Add the potato slices and fry gently for two minutes.