Leave the ice cream in room temperature for an hour to soften.
For the sponge base: In a small sauce pan, bring a cup of water to simmer over low heat.
Preheat oven to 425°F (or 210°C).
Beat the eggs and Sugar in a small steel mixing bowl over the simmering water (double boiler), until the temperature reaches about 110 – 120°F (or 40 – 45°C).
Remove from heat.
Continue beating until light and creamy - until it cools down again.
Add the flour and starch, then fold gently. Be careful not to overmix.
On a greased baking pan, line up a sheet of silicon or wax paper.
Spread the sponge base mixture thin over the sheet of silicon or wax paper.
The shape is not important as this will just be the cake base that will be hidden by the meringue.
A rough rectangle will be okay.
Bake quickly in the oven for about 4 – 5 minutes, then remove from oven and let it cool.
The cake should come off the paper quite easily.
In your choice of mold (we used an oblong-shaped mold - see picture), cover the bottom and sides with pieces of the cake.