Not sure if they still do it but Marks & Sparks chunky corned beef is a bang on.
Simple hash does it for me, equal measure of cubed CB and boiled spuds, mash the spuds & mix in the CB and a fried onion, salt, pepper, mixed herbs. Don’t mix it too much though. Grated cheese on top (Worcestershire Sauce if you fancy) then bang it under the grill. Serve with brown sauce and bread and butter.
In the unlikely event I find myself on death row this what I’ll be having 👍🏼
My mum used to make corned beef fritters and home made chips when I was young. Amazing!