For mash get new Dairy Milk Smash!
I was going to make a joke about how Kraft- well, Mondelez now- seem determined to shove every brand somewhere under their corporate umbrella together with Dairy Milk.
Racking my brains, I remembered that Kraft made Philadelphia cheese... ho ho ho. Until I remembered that they *did* do that a few years back. (#)
Then again, to be fair, even before the takeover, Cadbury went through a phase of combining and leveraging the Dairy Milk brand so that it appeared on lots of existing bars (e.g. Cadbury's Caramel) and several were modified to be more "Dairy Milk"-like.
I remembered thinking at that time that if they'd still owned the Smash instant potato brand (##) they'd have tried combining the two in some ungodly way.
(#) Albeit it wasn't a Philadelphia-filled Dairy Milk bar, but Philadelphia with chocolate. And actually, I notice it's not "Dairy Milk", just "Philadelphia with Cadbury", like "Cadbury" itself is some ******* ingredient. Anyway, I tried it and it was... meh. Pretty much what you'd expect Philadelphia mixed with chocolate to taste like. Not great, not awful, didn't buy it again.
(##) Which oddly, *was* originally made by Cadbury's and sold under their name.