The idea is simple - you pay full whack, but ask to 'Go Halves' and nominate the charity of your choice. You then receive a plate with your food bisected neatly down the middle (in the manner of a Damien Hirst), or just half the portion size if the former was impractical. Half the money you paid goes direct to the charity you nominated

Erm confused. And the restaurant who needs to make so many $$ per table served to survive gets what?