Sometimes only chocolate cake will do and when the chocolate mist descends this is the recipe I reach for time and again. Why? Because I don’t think chocolate cake should be difficult, or fussy (this recipe is neither) and I don’t know about you, but for me there’s something deliciously informal about a loaf cake. You don’t serve delicate slices of loaf cake, you serve slabs, and this bad boy in particular, in all it’s moist, dense loveliness, demands greediness. Resistance is futile.