The Perfect Hamburger

-That,- said Mr Borthwick, -was the best hamburger I-ve ever tasted!-

Joe has just created the yummiest, juciest, most delicious hamburger ever - and his friend Mr Borthwick wants to sell it in his new hamburger shop. But there-s a problem - Joe has completely forgotten the recipe and the shop is opening very soon.

A pinch of this, a touch of that and a spoonful of something else-the race is on for Joe to remember!