Keeping Supermarket Bought Basil Leaves Fresh

Recently we bought basil leaves from the supermarket for thai green curry. It was a huge pack and we only managed to use a tiny bit. We thought we could store it in the fridge but lo and behold, it started turning black after a week. Hmmm that's such a waste of an ingredient and money. So came the question on how others store their basil. I'm sure most folks wouldn't use a whole bunch of it in a week just because the supermarkets sell them in a pack.

As usual the answers is just a search away with Doctor Google. There were many articles and website advising the storage methods. And after skimming through a few, the similar ideas to store basil are:

1) It should be kept in room temperature

2) Keep away from the sun

3) Leave them in a vase of water, changing it everyday or two

4) Should be able to keep for about a fortnight

5) Roots and buds might grow

There are also a few on how to freeze basil leaves but I have to pass as the freezer is already full. So there, now I must try the vase with water the next time we buy basil. Will update on the results!