In science, we have been learning about thermal conductors and thermal insulators. We wanted to test to see how thermal insulation worked so we made a Baked Alaska.
To begin with, we laid a sponge cake on a baking tray and completely covered it in layers of ice-cream.
Next we put the cake and ice-cream back in the freezer whilst we whisked egg whites, sugar and vanilla extract together to make a meringue mixture.
After that, we covered the sponge and ice-cream with the meringue mix and were careful not to leave any bits uncovered.
Finally, we put the Baked Alaska into a hot over until it was golden brown. When we took the cake out, we cut into it and the ice-cream was still frozen. The meringue and the bubbles within it had acted as a thermal insulator and kept the ice-cream cold.
We all tested the Baked Alaska and quite like it!
