1) Open all the cans,
2) Cube the corned beef and throw contents of all cans into a big saucepan,
3) While it's "cooking", make up the Smash,
4) When stew is piping hot throughout, serve.
Kids love it. Serve some crusty bread & butter with it as well if you like. If they don''t like Smash get a big can of new potatoes instead - these can be put into the stew for heating.