Peel plantain, grate plantain using a box grater.
Add grated plantain to a bowl, stir in flour, bell pepper, green onion, garlic, baking powder, salt, annatto powder.
Add water and mix to form a wet batter.
Heat oil in a large skillet over medium-high heat. Add a tablespoon full of the batter to your frying pan and lightly flatten with a spatula or the back of the spoon.
Cook for 3 minutes on one side until golden brown, flip and cook them for another 3 minutes on the other side
Remove excess oil using a paper towel, serve immediately, or keep warm on a baking tray in the oven at 250 degrees F.