Mackerel - the destination of many trips

Today we will go on a bicycle trip, the goal of which is an extraordinary gourmet experience - grilled mackerel. If this article is read by knowledgeable people, i.e. mainly from Moravia, they know what and where I am inviting them to. According to my personal sociological research, mackerel grilling ends west of Moravia somewhere near Hradec Králové. Further towards Prague, the concept of grilled mackerel is quite exotic, and in fact, few people know how to do it correctly...