"Giant" Banana

One of my mother's exercise buddies at the Botanical Gardens gave my mother a banana which her sister brought over from their hometown in Malaysia. How special can a banana be?? 
We didn't give it two hoots until we saw it. We have never seen such a huge banana! It is close to 30cm in length. According to my mother's friend, this particular species of banana is extremely sweet, it can be sliced up and fried like goreng pisang. I wonder what species this is? I don't think I have ever seen the like of it in Singapore. 

The banana measured against a 20cm ruler