Why does smoked salmon look 'raw'? And why does it taste so different from a cooked fillet?
I don't tend to eat much fish, but in the supermarket earlier I saw some smoked salmon which didn't need cooking, and some salmon fillets which did. They looked the same really - both 'raw'. I decided to buy some of the fillet. It was nice, but a very different flavour from when I've tried smoked salmon in the past. The cooked fillet was quite chicken-y with a slight earthy/fishy taste, whereas smoked salmon has a very strong fish flavour.
Why do they taste so different? And why is smoked salmon safe to eat without cooking when other smoked fish do need cooking?
Smoking is an ancient method of preserving food. It imparts a smoky flavor which many people enjoy (though some do not). The advantages of smoking vs cooking include being able to smoke large amounts of food efficiently using racks and potentially less and/or cheaper fuel, and greatly reduced risk of burning the food (or the racks, which may be made of wood in a primitive/camping context).
While smoked meats are what we often think of, many foods can be smoked including vegetables, herbs, spices, and almost anything if you like the flavor it imparts to the food.
Smoking does also cook the food, only slower. Also, some people do eat raw or undercooked meats as a culinary choice. It does increase the chances of acquiring food borne parasites if the meat is undercooked.