aStockholm's Norra Jästaktiebolag in the early 1900s

1893 - 1900

In the late 19th century Sweden is already home to many small yeast producers.

In 1893 a new, large yeast factory is built in Sollentuna, just north of Stockholm. The location is ideal, as yeast production requires large amounts of clean water, and there is plenty of high-quality groundwater in the ridge running northwards through Sollentuna. Another benefit of this location is that it’s a farming area, so by-products and organic waste can be put to good use as fertilisers.

During its first year the factory’s 90 employees produces 700 tonnes of yeast.


Production worker in the early 1900s

1900 - 1940

The early years of the 20th century bring a period of great change to the yeast industry in Sweden, with small yeast producers consolidating their operations. In 1919 some of the largest producers join forces to form Svenska Jästfabriks AB.

At this time, it is also common for yeast producers to manufacture alcohol, as these two types of products requires more or less the same raw materials and equipment in the production process.


Production worker in the early 1900s
aPackaging Machine KronJäst 1 kg

1940 - 1970

In the 1940’s alcohol production becomes less profitable and the factories shift their focus to baker’s yeast.

At the time yeast is generally supplied to bakeries in 1-kilogram blocks and sold loose to consumers. In the mid 1950’s 50-gram blocks wrapped in paper are introduced as a very practical solution for housewives.

In the mid 1960’s Jästbolaget begins to sell dry yeast, which is a novelty in the Swedish market.

Jästbolaget's premises in Sollentuna

1970 - 1980

In 1971, the factory in Gothenburg is closed down, leaving the plant in Sollentuna as the last remaining yeast factory in the country. As the factory’s capacity isn’t large enough to supply the entire population, yeast has to be imported to Sweden.

The parliament states that domestic production of baker’s yeast is necessary from a national food contingency planning perspective and introduces a duty on imported yeast resulting in higher prices and profitability and thus room for investments in a new production plant.

A consortium of four takes over as owners of Jästbolaget, tasked with building a new factory in Sollentuna.

Jästbolaget's premises in Sollentuna
aDry yeast

1980 - 1990

The new factory opens in 1980, giving Jästbolaget the capacity to fully meet the market demands.

Until now, dry yeast  had not been produced in-house, but in the mid-1980s a production line for dry yeast is inaugurated.

Oil stocks and rising energy prices encourage the company to enhance the energy efficiency in the factory, and in 1988 it introduces a recycling system of heat converters, heat exchangers and water recycling methods, which have led to excellent results, both environmentally and financially.


KronJäst for sweet doughs

1990 - 2000

The early 1990s bring important environmental and energy-related investments. For example, a large heat converter is installed to recover all heat generated in the fermentation process. The energy is transferred to the municipal district-heating network, and provides heating to around 1,500 homes.

Wastewater had previously been released untreated into the municipal sewerage system, but now a facility is put into operation to recover most of the nitrogen and potassium from this wastewater. The resulting nutrient-rich by-products are now used as agricultural fertilisers.

In 1993, Jästbolaget celebrates 100 years of production in Sollentuna!

In 1995 a brand-new yeast for sweet doughs is launched, KronJäst för Söta Degar.


KronJäst for sweet doughs
aTanks in the production site

2000 - 2010

In 2002, Jästbolaget becomes a wholly owned subsidiary of Norwegian company Orkla, and sales in Sweden are transferred to Orkla’s distributor for the bakery market, KåKå.

In 2005, Jästbolaget takes over all yeast production from Orkla’s factory in Oslo, which is closed down. To handle the extra volume, further investments are made in buildings and production equipment, and a couple of production lines are transferred from Oslo. Our yeast is sold under the brands KronJäst in Sweden and Mors Hjemmebakte in Norway.

Jästbolaget begins to supply liquid cream yeast in road tankers to large customers, as this results in fewer spills and requires no packaging. For the Norwegian market, as well as for medium-sized Swedish bakeries, liquid cream yeast is supplied in returnable 1,000 litre containers.


Bagarlandslaget's delights

... and some more from 2000 - 2010

We start making dry yeast for winemaking, which is exported mainly to the European market.

Development work on the use of yeast in baking is intensified, and an Innovation Bakery is built and integrated into our operations. In the bakery we test-bake our yeasts, hold courses for professional bakers and pastry chefs, and develop recipes for our brand website This is also where the senior and junior Swedish National Bakery Team train and prepare for competitions.


Bagarlandslaget's delights
aKronJäst Wholewheat Sourdough and KronJäst Rye Sourdough

2010 - present

With organic products becoming ever more popular, an organic bread yeast, KronJäst Ekologisk, is launched in 2011. In 2012 our new sourdough starter, KronJäst Surdeg, is crowned product of the year at Dagligvarugalan, the Swedish food industry’s national awards ceremony.

We also continue to make environmental improvements. The benefits of an unbroken cold chain and reduced transports have prompted us to build a new low-energy cold store at our premises in Sollentuna, putting an end to refrigeration and storage in a warehouse on the other side of Stockholm.

In 2015 we started distributing our 50 gram packs to the Swedish market in returnable plastic crates, SRS, instead of cardboard boxes, further reducing our environmental impact.

Jästbolaget proudly presents a new patented product in 2017 – Acrylow® , a natural product which reduce the level of acrylamide. A product sold to the food industry.