The traditional, unchanging face of winter in Oslo - Norways capital.
Whats different this year is that buying chocolate and sweets to restore energy after some seasonal exercise has become a lot more expensive.
A sugar tax, which Norwegians have got used to paying over many decades, has gone up dramatically in January - more than 80 percent.
But theres a faster flow of sweets two hours drive from Oslo.
Over the border in Sweden, where theres no sugar tax, there are vast candy shops like this one.
Theyre trying to entice Norwegian shoppers with products which are half the price.
The sugar tax in Norway goes back to the 1920s and was introduced as a revenue-raising measure.
The government believes its helped keep obesity levels relatively low, along with efforts to get food companies to reduce sugar content.
We’ve managed now to stabilise the obesity of children and young people and Im happy about that.
It means that what we have done until now had been functioning on the right way.
Other countries planning similar policies will watch with interest.
Perhaps it will lead to a fall in consumption, or perhaps it wont make much difference - especially to Norwegians with more of a taste for exercise than sweets and sugary drinks.