Largest Edible Oil Producer in Croatia Equipped with Safe Gas Warning System MSR-Electronic gas sensors protect against refrigerant leakage in food production. Zvijezda plus d.o.o. in Zagreb is the largest producer of edible oils in Croatia and the only producer of margarine and mayonnaise products. Zvijezda has been successfully operating at the top of the Croatian food market for over 100 years. Apart from products from its own production, Zvijezda also distributes other products under its name, such as olives, cheese and canned vegetables. The recently modernised production line produces e.g. 15,000 butter portions per hour. Zvijezda's new laboratory and production plant with cooling facility as well as the machine room are additionally protected by gas warning systems from MSR-Electronic. The machine room also meets the highest safety standards in the ATEX zone.