In a large bowl, whisk together the flour, sugar, baking powder, cardamom, and salt. Make a well in the center, then use a rubber spatula to mix in the egg and coconut milk until the dough comes together.
Turn the dough out onto a floured surface and knead until smooth. Dive the dough into 4 portions. Roll out 1 portion of dough into a circle about ¼-inch (6 ml) thick. Cut into 8 triangles. Repeat with the remaining dough portions.
Heat the oil in a large pot until it reaches 350˚F (180˚C).
Working in batches, fry the mandazi for 2-3 minutes per side, until golden brown. Drain on paper towels. Serve as breakfast or a snack with 5. Kenyan coffee or chai.