The melted butter is a trick – this kind of sponge shouldn’t contain fat – but it makes the sponge more flexible so you can roll it. I’m not going to pretend this is something you just whip up, but it’s fun to make, in a ‘Blue Peter’-ish kind of way.

You can serve raw berries with the roll instead of apricots and, of course, blend the ice cream with other ingredients, such as toasted nuts, chocolate chips or crushed chocolate-covered coffee beans.

Requires freezing time