Katsu Curry at home

I am a big fan of Katsu Curry when going out for Japanese, and have sought how to recreate it at home. I finally discovered it in the local Asian supermarket. Its called Golden Curry!! The great thing about it is that it comes in these block just like a block of chocolate, and you just break off a block and put it in a pan with some water and boiled carrots and you have a curry! Those Japanese, they are so clever!