Which recipe book could you not live without?

[TheWorstWitch]

And why?
Looking for christmas present inspiration.
TIA

grownupbabes - I agree. They are in a different category - not trying to be sparkly or cutting edge or catapault their authors to stardom - just full of foolproof recipes (and, anothet plug here - if you like them you really really should get Stephanie Alexanders Cooks companion)

Nigella's How To Eat - though I like Feast and Domestic Goddess a lot too - for a good sound traditional repertoire using modern shortcuts like food processors.

I probably cook more often from River Café, but can improvise Italian easily. I need Nigella for reference.