Fresh seal meat is served at the end of the hunting season in spring, and Tromsø is the place to look for it. Reindeer are often served as finnebiff, thin slices in a cream sauce. Reindeer filets have become more popular in high-end restaurants in recent years, but the price can be prohibitive as the reindeer industry is shielded from market forces by the Norwegian government (in essence, it is treated as a vital component of Sami culture, rather than a competitive industry, which means there is little pressure to actually sell the meat products). Lamb meat from sheep following the retreating snow line up the hills and mountains to get the most nutritious fresh vegetation throughout summer is highly regarded by the locals, and research seem to indicate that a varied diet does influence the taste of the meat. Game meat includes mountain hare, rock ptarmigan, willow grouse and moose. Foods with dairy as an important ingredient include waffles, pancakes and rømmegrøt (sour-cream porridge), the latter always served with sugar and cinnamon. None of the aforementioned are distinctly Northern Norwegian foods, however, but are popular throughout Norway. There are a number of local traditions in this long region, including goat cheese from Balsfjord, "Blanklefse" and other variations of "lefse" from Helgeland, and a number of variations of reindeer, an integral part of traditional Sami culture. Wild berries have long traditions in the local cuisine, and the most sought after is the cloudberry, used in marmalade, desserts and cakes. Other popular wild berries are bilberries, lingonberry, raspberry (southern half of region, also cultivated in some private gardens), and there are also a number of less well known berries used for food. Mushrooms are common in the forests from late July to September and also has seen some use in traditional food. The use of kitchen gardens is limited by climatic factors, but still has a long history in the southern half of the region. Rhubarb and redcurrant has been used for more than 100 years; redcurrant also grows naturally in much of the region, blackcurrant is also common in gardens. In addition to potatoes and carrots, rutabaga and sometimes cabbage have traditionally been grown (very little in Finnmark). Many wild plants were used for medical purposes or as spices, such as Garden Angelica, but this has become rare in modern times.