How to open a can of olive oil? I have a 900 ml can of Saloio olive oil. I lack any idea of how to open it. 



The top of the tin is more-or-less seamless (see photo), and lacks any sort of indicator as to how this may be accomplished. At the rim, the metal on the top folds over the outside of the tin, and I've tried wedging flat instruments of all manner in there to no avail.

So, I'm wondering: what is the best way to open a container like this?
I would suggest using a can punch. Punch a hole on both of the shorter sides on top, one to pour with and the other to allow air flow. 

If you are unsure what a can punch is.... here is a pic

Hope this helps.