I can't say that I actually love Sardines and/or Kippered Herring; but I do enjoy them once in a great while. In fact, I had a tin of kippered herring & some crackers for lunch. 
For those who may not know, Kippers are split, smoked, salted herring. Herring are high in omega-3 fatty acids and vitamin D. You may want to limit the amount of Kippers if from larger Herring, as they may contribute a greater amount of mercury or PCB's (an environmental contaminant). Sardines are also high in omega-3 fatty acids and vitamin D. Since they are much smaller fish, they contribute much less mercury to the diet. So then, which is better? I would say go with the canned sardines. You have a lower exposure to mercury and less salt as well. Throwing in some Kippers once in a while won't be the end of the world though.
For those who may not know, Kippers are split, smoked, salted herring. Herring are high in omega-3 fatty acids and vitamin D. You may want to limit the amount of Kippers if from larger Herring, as they may contribute a greater amount of mercury or PCB's (an environmental contaminant). Sardines are also high in omega-3 fatty acids and vitamin D. Since they are much smaller fish, they contribute much less mercury to the diet. So then, which is better? I would say go with the canned sardines. You have a lower exposure to mercury and less salt as well. Throwing in some Kippers once in a while won't be the end of the world though.
