A good egg

Egg and Kalles Kaviar is a popular sandwich combination in Sweden. The cod roe spread is based on an ancient traditional Swedish recipe, and the manufacturer Abba Seafood is something on a national institution.

However, despite the popularity of Kalles Kaviar, it has to be said that the interactive potential for sandwich spread is fairly limited. Instead, Kalles chose to concentrate on its natural sandwich partner, the humble egg (or ägg).

Boiling an egg to perfection is not as easy as it might at first appear. Everybody has their own idea of the perfect egg, and then there are so many variables to consider.

For egg fans

A new iPhone app from Swedish sandwich filling Kalles Kaviar now comes to the aid of egg-fans everywhere. The app has been designed to open up every aspect of the egg experience, from checking its provenance to determining the correct boiling time to achieve the ultimate boiled egg.

The app also selected music from the iPhone's music library that would match the cooking time, to keep the cook entertained until their egg was ready.

The free branded app was made available in the free app section of Swedish iTunes.

Results

There have been more than 50 000 downloads to date (9 June 2011).