Madeleine
A small, shell-shaped French sponge cake from the Lorraine region — light, buttery, and flavoured with lemon zest, baked in a distinctive shell-shaped mould; the madeleine owes its extraordinary cultural fame to Marcel Proust, whose narrator in In Search of Lost Time triggers a rush of involuntary memory upon tasting one dipped in tea, making it the literary symbol of nostalgia and sensory memory.