An example of how you shouldn’t do showed one fish seller in Kuwait. As you may know the freshness of fish is measured by its eyes and gills. Interesting that all fish in this shop looked fresh. The fact is that seller glued toy plastic eyes to already spoiled fish.
This plan worked. One woman bought this fish and detected cheating while preparing it for cooking at home. She published online the photos of this fish with toy eye and attracted representatives of the Ministry of Commerce. In addition, the shop was closed and perpetrators were punished.
It is important to choose responsible and honest supplier especially when it comes to food!