Baking soda Because baking soda is a white crystalline powder, and edible alkali is a mixture of soda ash and baking soda. Baking soda has a stronger decontamination ability, and can be used with salt, detergent, white vinegar, etc. to clean dirt, especially the oil stain in the kitchen, which has a better cleaning effect. Therefore, baking soda has a better degreasing effect than alkali.