My mum always did this and we still do the same , nothing tastier ! ( she used to call it bubble+squeak) .

Just make up a few extra sunday dinners , pork lamb , beef , chicken , whatever , all the veggies , gravy and all .

When you're back from the pub , or night out , throw the lot in to a frying pan , chop it all up and give it a good fry up ( i like it burn't top and bottom ) .
Serve it with , pickled cabbage , beetroot , again the choice is yours , i love it with a bit of brown sauce .

And plenty of bread and butter !