Much of Iceland's cuisine is based on fish, lamb, and dairy products, with little to no utilization of herbs or spices. Seafood is central to most Icelandic cooking, particularly cod and haddock but also salmon, herring, and halibut. It is often prepared in a wide variety of ways, either smoked, pickled, boiled, or dried. Due to the island's climate, fruits and vegetables aren't generally a component of traditional dishes, although the use of greenhouses has made them more common in contemporary food.
Traditional Icelandic food, such as you would find served on any given Sunday, is the roasted leg of lamb with potatoes, gravy and green beens. But there are other less frequently made meals which are based on the ancient Icelandic food recepies. Many older dishes make use of every part of the sheep, such as slátur, which consists of offal (internal organs and entrails) minced together with blood and served in sheep stomach. These older dishes are made once a year around febuary at a time called called Þorri, the food is therefore called Þorra-food or Þorramatur. It is a selection of traditional cuisine consisting of many dishes including skyr, hákarl (cured shark), cured ram, singed sheep heads, liver sausage and black pudding. Puffin is considered a local delicacy that is often prepared through broiling. Of these dishes only the skyr, liver sausages and black pooding are eaten on a dayly bases.
Breakfast in Iceland usually consists of cereal, fruit, and coffee. For lunch anything goes.
The main meal of the day for most Icelanders is dinner, which usually involves fish or lamb as the main course. Lamb is by far the most common meat, and it tends to be either smoke-cured (known as hangikjöt) or salt-preserved (saltkjöt). Additionally, boiled or mashed potatoes, pickled cabbage, green beans, and rye bread are prevalent side dishes.
Coffee is a popular beverage in Iceland, and is drunk at breakfast, after meals, and with a light snack in mid-afternoon. Coca-Cola is also widely consumed, to the extent that the country is said to have one of the highest per capita consumption rates in the world.