Press release – 5 August 2025
For immediate release

In the trial, the daily organic waste from restaurants is processed using Dieta’s new high-efficiency composter. This model has the capacity to compost up to 30 kilograms of organic waste per day. The nutrient-rich compost produced is then delivered to the cultivation fields of Deli Verde and Kotipellon puutarha. It can be used in all types of cultivation, including urban gardens and other community growing projects.

"It’s fantastic to be involved as a partner in production and restaurant operations, helping to enable the cycle from field to table and back. With fewer transport needs, the carbon footprint of restaurant operations also decreases, and it’s very important for us to make this possible. There are also simple, concrete actions that promote sustainability. This composter transforms over 180 kilograms of organic waste into 18 kilograms of compost each month," explain Dieta’s Account Manager Minna Miettinen and Matti Kamppinen, describing the system’s operation.

The aim of the trial is to compost the daily organic waste from restaurants, reduce the amount of organic and mixed waste, and produce a nutrient-rich compost fertiliser for use in primary production. The fertiliser produced in the trial is delivered to the facilities of Deli Verde and Kotipellon puutarha, where it is used for soil enrichment and cultivation.

"We got our first experience with high-efficiency composting in our restaurant Kustavin Kipinä this summer, and the results were unequivocally positive. Ninety per cent of the organic waste was composted, including a large portion of paper and some cardboard."

Kuru explains that the composter allowed the restaurant’s waste management to be simplified and streamlined, which was extremely important in archipelago conditions.

"It also felt great to be able to return the highly nutrient-rich compost to production at Deli Verde’s garden."

Next, the composter will move to Turku, to the esteemed restaurant Kakolanruusu, known for its open-fire cooking and shared feasts. The restaurant will take part in the Food & Fun Festival in Turku in October, where visiting top international chefs will create unique tasting menus together with local restaurants.

“The values of Kakolanruusu are rooted in environmental friendliness, and this was such a wonderful opportunity to try something new. We were determined to take part. Responsibility is evident across all areas of our operations. Among other things, we hold a Green Key certificate and the Sustainable Travel Finland label, which verify our environmentally friendly practices,” comment Laura Haatanen, Restaurant Manager, and Matti Roiniola, Head Chef, at Kakolanruusu.

The composting trial is being carried out in collaboration with the event organiser, the device’s importer Dieta, and the participating restaurants. The composter’s weekly hygiene programme ensures safe and odourless use, making it suitable even for compact urban spaces.

Participating organisations:

Dieta Oy:

Dieta Oy is a Finnish company with over 30 years of experience in implementing professional kitchens, ranging from cafés and restaurants to complete service solutions for hospitals, schools and care homes. Expertise, a genuine passion for food, high-quality ingredients and the right product solutions — these are the ingredients for creating a unique experience in everyday life and on special occasions. Dieta helps professionals succeed in this again and again. The company also assists businesses in selecting the right equipment, tableware, supplies and services for both the kitchen and dining areas.

Food & Fun Festival:

The Food & Fun Festival will be held from 8 to 12 October 2025, bringing together chefs from Turku and around the world. Together, they will create menus by combining visiting chefs’ ideas with local ingredients. The event invites people from Turku, Finland and abroad who love good food to enjoy unique food and drink experiences as well as high-quality culture.

Contact and interview requests:

Jouni Kuru, +358 45 862 8705, [email protected]

Website: https://www.foodandfunfestival.com/
Facebook: https://www.facebook.com/foodandfunturku/

Press release photos:

https://drive.google.com/drive/folders/1mGnQn-ni45wLMJLi6kvtq31f04K6X8qE?usp=sharing