Lakes in Finland provide many opportunities for fishing &amp; fish has always been an important protein source. Preparing fish, including frying, boiling, drying, salting, fermenting, cold smoking or simply slicing sea fish and eating it raw. Salmon is a popular choice, both as kylmäsavustettu lohi: cold smoked salmon, lox, or served raw with lemon juice as graavilohi (gravlax in Swedish). It is common to smoke any types of fish, like salmon, zander, pike, perch and Baltic herring.