It's chocolate.
Whittaker's make all sorts of different chocolates - loads of traditional types (dark, milk, white, coconut rough, caramel, fruit and nut, etc, etc). They also do an artisanal range - local fruit (HB apples, Black Doris plums), sea salt - all sorts.
And then every now and again, they produce slightly whacky, limited edition flavours - usually with a real Kiwi twist - Jellytip, L&P, K-bars. These won't mean anything to you, but there's a real nostalgia in these flavours for Kiwis.
This is just another limited edition flavour.
It's still just chocolate.