Wine, spirits and strong beer are only sold at Vinmonopolet - special shops that are wholly owned by the state. Such shops are found in the larger cities and towns.
Beer can be bought at supermarkets, but only before certain times of day. This can vary from place to place but is by law no later than 8:00 pm on a weekday and 6:00 pm on Saturdays and other days immediately preceeding public holidays. The exception is the day before Ascension day, which counts as a weekday. No alcohol is sold in shops and supermarkets on Sundays, public holidays and days when elections or referendums are held, nor is it legal for shops to sell alcohol on the 1st or 17th of May. Beer with less than 2.5% alcohol by volume may be sold for as long as the shop is open.
Most restaurants are licensed, and may also serve alcohol on days when shops are prohibited from doing so.
Within the limit of NOK 6,000 you are allowed to bring with you the following alcoholic beverages free of customs and excise duty:
a) 1 liter of beverages with more than 22 % up to and including 60 % alcohol per volume as well as 1½ liter with more than 2.5 % up to and including 22 % alcohol per volume or 3 liters with more than 2.5 % up to and including 22 % alcohol per volume
b) 2 liters of beer with more than 2.5 % or other beverages with more than 2.5 % up to and including 4.7 % alcohol per volume.
This means that you may for example bring with you 5 liters of beer provided you do not have with you any other alcoholic beverages.
For importing alcoholic beverages with more than 22 % alcohol per volume the minimum age is 20.