Put the banana in a heatproof container and mash it with a fork. Microwave it for 1 minute.
Heat the milk in a saucepan.
Remove the milk from the heat just before it boils, then mix in the cocoa.
Mix in the banana from Step 1.
Add the gelatin a little at a time and dissolve well. If you are using the type that needs soaking, let it soak first before adding it.
Pour the mixture into the cups. Let it cool, then put it in the fridge to chill and harden.
Story Behind this Recipe
I wanted to eat something sweet when I was pregnant, but I was watching my sugar intake, so I just made this on impulse. There's no need to add sugar because it is sweet enough with just the banana. Hurrah for bananas! The gelatin gives it a nice, plump texture.
Heating the banana will bring out its sweetness, so it's fine if the banana is not ripe. Don't mash the banana until really smooth, otherwise you won't be able to enjoy its texture. You don't need to blend it in a mixer. I used Morinaga brand pure cocoa. Sugar-free cocoa is the key.