I think it possible that, on a practical level, the most useful book in our flat, the one to which, I think it is fair to say, I personally turn most often, is London at Dinner: Where to Dine in 1858. The restaurant recommendations are astute! But it is the recipes that really sustain me, and it is to them to which I return so often. Today it's Kedgeree. I love the taste of boiled haddock in the morning.