That is a whole another subject. Been coming to Vietnam for 5 years and they are always drinking Tiger beer which is what I prefer.. This time when I'm here they are all drinking Heineken beer in the small 10 oz cans. So of course I ask why. Because I prefer Tiger beer. Believe it or not they told me that they don't get as drunk on the Heineken beer as they do on Tiger beer. Lol. It's probably more like the cans are smaller? Wouldn't you say.? It's unbelievable some of the things that come out of their mouths here. I had the laugh hard when they told me that.