I volunteered to provide a dessert for a party associated with a preconditioning conference – hence, my eigenvalue rainbow cake. Get it? Because eigenvalues and rainbows are both a kind of spectrum! I’ll stop explaining my own jokes and provide some pictures…
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Implementation details
I used this buttermilk cake recipe for the sponges. The frosting is an Italian meringue buttercream from The Culinary Institute of America’s Baking and Pastry: Mastering the Art and Craft (2nd Ed., p. 480).