The Indus River Valley Cake recipe calls for ingredients representative of the Indus River civilization including rich soil, the Indus River, Aryan people, monsoons, Harappan powder, and plumbing from Mohenjo-Daro. The ingredients are mixed in a "Great Bath" cake pan and baked in the hot summer sun from June through October before being frosted with a mixture of the Caste system, Hinduism, unpredictable rivers, and Mohenjo-Daro plumbing. The finished cake is topped with powdered Harappan people and decorated with an undecipherable Harappan language.