Talking Agas, my most well used book is Mary Berry's Aga Book. It was left for me as a gift by the previous owner, knowing that an Aga can be quite a daunting thing, squatting in the corner of the kitchen, with no immediate and helpful dial or guidance on how on earth to tame it, let alone work with it! Although not used quite so much, this book got me through many teething problems in the early years!
Sea salt producer
I was lucky enough to go on an Aga workshop with Mary Berry to learn how to use my brand new Aga put in when we moved to our present house. She and it is a delight, well written with all you need to know, plus a few personal details for added reading pleasure.
Head chef, 69 Highbury Hill
Essential if you've got one. Best ever Quiche recipe and lots more.
Rare-breed meat producer