You can still bake a cake without baking powder or baking soda by using some alternative leavening methods. Here are a few options:
Eggs: Eggs can provide structure and help your cake rise. Beating the eggs until fluffy and folding them into the batter can add volume.
Yogurt or Buttermilk: These acidic ingredients can react with baking soda or baking powder in some recipes. If you don’t have them on hand, you can try using them in combination with an alternative acid (like lemon juice or vinegar) and another leavening agent.
Self-Rising Flour: If you have self-rising flour, you can use it instead of all-purpose flour. Self-rising flour already contains leavening agents, so you won't need to add any more.
Whipped Cream: Whipping cream until it’s stiff and folding it into your batter can give the cake a light texture.
Air Incorporation: Make sure to cream your butter and sugar together thoroughly to incorporate air, which can help with rising.
