My immediate response to Izaak Walton, author of The Compleat Angler is ‘I don’t agree’! However he of course is talking of the freshwater chub, which is a member of the carp family, whereas I as a result of many visits to the Algarve am thinking of Chub Mackerel which is quite different and quite delicious grilled.
Apparently you can tell the difference between Chub Mackerel and Mackerel by the pattern on its upper sides. On the Chub Mackerel the lines seem more curvy, almost whorls. On the Mackerel they are simpler, better described as dark blue wavy lines running down. That all makes sense to me but when I compare these descriptions with my pictures I am struggling to tell the difference. Not sure if that is because of me, my photographs, the descriptions or the fishmongers labelling fish as what they understand it to be not necessarily being what a biologist says it is.
Now just to confuse you the Horse Mackerel is not a member of the same family. The Horse Mackerel – which you will spot is called Carapau, Chicharro and Xixarro in Portugal – is from the Carangidae family. Alan Davidson in his excellent fish book suggests that Horse Mackerel have only a modest attraction for the table. However we have thoroughly enjoyed it and we are not the only ones to appreciate it check out Salt of Portugal . You may also have spotted the prices in my pictures. Not much more for the Horse Mackerel but enough to suggest it is also more highly regarded than either the mackerel or chub mackerel by the Portuguese.
Having extolled the mackerel, I am going to finish with tuna. We have not had much from the market, simply because there are so many other fishes to try. However what we have had has been divine, and unlike the majority of markets in the UK, in Olhão you have a huge choice of cuts and type.
Apparently most of the tuna brought in at Olhão is flown straight out to Japan. There are factories in the harbour area who only process the tuna, and some of it is flown out alive in tanks. Tuna is highly regarded in Japan, it is though also delicious when grilled at Vai e Volta where you will get the added bonus of mackerel too!