Prepare the plantain: Peel the green plantain and grate it finely. The moisture from the grated plantain is sufficient; no water or flour is added.
Grind the plantain: Using a mortar and pestle or blender, grind the grated plantain until smooth but thick in consistency.
Season the mixture: Add salt to taste and grind further to combine well.
Add vegetables: Mix in finely diced red and green chilies and spring onions according to your heat preference.
Divide the mixture: Divide the mixture into two portions. Leave one as is for the denser version.
Prepare fluffier version: To the second portion, add bicarbonate of soda, baking powder, and an egg yolk. Mix well and aerate to create a fluffier texture.
Heat oil: Heat vegetable oil in a wok or frying pan to the right temperature. Test by dropping some spring onions to see if they bubble.
Fry the akara: Scoop about a tablespoon of the mixture and fry. For the fluffier version, fry first, turning every 2 minutes, for a total of about 8 minutes until golden brown.
Drain and serve: Remove the akara from oil and place on kitchen towel to absorb excess oil. Serve hot.