In the first quarter-final, the most talented six of the weekreturn to compete for a place in Knockout Week.The competitorstake on an intense challenge set by formidable food criticWilliam Sitwell, who calls for an exquisite plate of foodbased on infamous school dinners. This is not a time for lumpymash, overcooked fish or gloopy gravy. William doesn't carryfond memories of what his school served up, so he's prayingfor some originality and humour.Those who come out with poorgrades will be on the next bus home, as only the best headinto Knockout Week.