How do I make kiwi infused vodka?

…or is it vodka infused kiwi? Anyway, I had kiwi flavored vodka at a bar in NYC a few weeks ago and I wanted to make the same thing. They were really good. They had kiwi slices and vodka in a gallon container, but I forgot to ask if they added anything else to it and how long they kept the mixture sitting there before serving it. So, I have a dozen kiwi and two 750 ml bottles of vodka. Do I add anything else to this, like sugar? Do I need to add more kiwi? How long do I let this mixture sit there before I can serve it? What is your recipe?