When Iceland shops first opened they had open cases of loose frozen food and veg in the freezers, with scoops to serve yourself with as much of each as you wanted. You took a plastic bag and used the scoop to put as much of each item in it as you wanted. You took your bags to the till and paid by weight. They also had things like Fish Fingers , chicken portions, chips and frozen pies loose and you just put as many as you needed in your plastic bags and paid at the till by how many you wanted. It was a lot cheaper than buying the same items prepacked in a cardboard box. Was it this you remember?