Brew a strong chai tea and measure 3 tablespoons.
In a microwave-safe mug, mix flour, sugar, baking powder, baking soda, cinnamon, ginger, cardamom, and nutmeg.
Pour in chai tea, milk, oil, and vanilla extract. Stir gently until smooth.
Optional: Mix in chocolate chips for a chocolate chai twist.
Microwave on high for 80–90 seconds. Check after 80 seconds; cake should rise and be soft.
Let cool for 30–60 seconds. Top with whipped cream or a sprinkle of cinnamon if desired.
Serve immediately with a spoon and enjoy!