In Scotland, the fish tends to be haddock, where in England it tends to be cod. This is because both fish tend to be sourced from Scottish waters in the North Sea, and then shipped around the UK. Haddock was thought to taste better than cod when fresh, while cod tasted better a few days later. In the days before refrigerated haulage this meant that haddock would taste bad by the time it made it out of Scotland, while the cod would still taste good if it took a few days to reach its destination. Hake, pollock, whiting, and plaice are also seen at many chip shops. In Scotland, 'special fish' is a variant where the haddock is breadcrumbed instead of battered.