Coronation chicken is a bound-chicken sandwich whose character lives entirely in the dressing, and the dressing is sweet before it is spiced. Cold cooked chicken is folded into a mayonnaise base loosened and coloured with mild curry, then sweetened and fruited with mango chutney and often sultanas and a little dried apricot or cream. The result is a pale, cool, lightly curried filling where the dominant note is sweet-fruited rather than hot: the spice is there to round and warm the mayonnaise, not to assert itself. The defining fact of this sandwich is that it is a buffet and afternoon-tea filling, built to be eaten cool, in quantity, alongside other things, which is why its seasoning is calibrated mild and its texture is smooth and forgiving rather than punchy.
The craft is the bind and the balance of sweet against spice. The chicken is cooked, cooled, and cut or shredded small so it packs evenly and each bite carries the same dressing rather than landing as plain meat at one end and sauce at the other. The mayonnaise is loosened just enough to coat without running, because a wet filling soaks the soft bread it is built for, and the curry is kept gentle so it supports the mango chutney rather than overpowering it. Sultanas add chewy pockets of concentrated sweetness and a flaked almond, where used, adds the only crunch in an otherwise soft filling, which matters because an all-soft filling on soft bread reads as one note. The bread is plain and buttered to the edges, sealing the crumb against the dressing, and the sandwich is pressed and often crustless when it appears on the tea tray.
The variations stay inside the sweet-spiced, cold-bound frame. A hotter version pushes the curry forward and pulls the chutney back, shifting it from buffet-mild toward something with more bite. Coronation turkey runs the same dressing over leftover roast bird rather than poached chicken. A coronation egg or chickpea filling applies the dressing to a meat-free base entirely. Each of those is its own sandwich and deserves its own article rather than being crowded in here.