Place chocolate ice-cream and Flake in a large bowl and set aside to soften. Once soft, beat with a wooden spoon until the Flake is well combined. Spoon into a 23cm round spring-form pan and smooth with a spatula. Cover with foil and freeze until firm.

Clean the bowl. When chocolate ice-cream layer is firm, place vanilla ice-cream and Maltesers in the bowl. Set aside to soften, then beat until combined.

Remove pan from freezer, sprinkle with Violet Crumble, then spoon vanilla ice-cream over top and smooth. Freeze until firm.

Repeat with strawberry ice-cream and marshmallows.

When ready to serve, carefully remove collar and decorate with hundreds and thousands.