This cardamom coffee cake is perfect for breakfast or brunch. The cake is moist and fluffy, with a delicate flavor of cardamom that is complemented by a cinnamon streusel topping. To make the cake, you will need flour, sugar, baking powder, salt, eggs, milk, vegetable oil, and ground cardamom. Mix the dry ingredients together, then add the wet ingredients and mix until smooth. Pour half of the batter into a greased cake pan, then sprinkle with half of the cinnamon streusel. Pour the remaining batter on top, then sprinkle with the remaining streusel. Bake for 30-35 minutes and serve warm.