there are ripe (yellow) and green.

the recipe you posted above is better for the ripe ones.

the green ones need a little flavor (salt) to help it along...to make it tostones style is better

cut plantains into slices-not too thin

soak in water and salt mixture...for half an hour to an hour

place in a deep frying pan with about 1-2 inches oil. fry until almost browned

remove from pan, drain, and flatten with a flat edge ..return to fryer until browned