Sir: Nicholas Lezard derides Delia Smith's "infallibility" (Profile, 11 December). He thinks an uncertain outcome to a recipe lends the process a certain "sexiness". He inhabits a different planet. I, like so many, cook to feed, loathe the whole business and follow Delia to the letter because my grudging efforts are guaranteed a good result. Delia knows how we tick - hence her enormous success.