Nisu is the old Finnish word for wheat and this bread. Modern Finns call it Pulla, but those of us with Finnish ancestors, can still call it nisu.
According to Wikipedia:
"Pulla (Finnish pronunciation: ['pul-a]) is a mildly-sweet Finnish dessert bread flavored with crushed cardamom seeds and occasionally raisins or sliced almonds. Braid loaves (pitko) are formed from three or more braided strands of dough. The braids may also be formed into a ring. Other types of pulla include small round ones that resemble English scones but have a sugar and butter topping, and larger cinnamon buns called korvapuusti. The outside typically has a shiny brown glaze, formed by a coating of egg white, milk or a mixture of sugar and brewed coffee (or cream cheese frosting)."
Pulla is also common in areas in the United States and Canada which have large Finnish populations. It is also commonly known as nisu, which is the old Finnish word for the same that is still used in some regional dialects, despite originally meaning "wheat."
Pictures and recipe can be found on this link. I have a great recipe too, but don't feel like typing it out today. Maybe another day...
http://www.thefreshloaf.com/node/4168/finnish-nisu-aka-pulla