The fast of Ramadan ends with the feast of Eid al-Fitr. But among the flyers from Coop, Lidl, Ica and Willys, there are no clear references to the holiday.

Some of the chains offer extra prices on Ramadan foods such as dates, rice and parsley. "There seems to be a fear of making mistakes and intimidating other groups," says David Khabbazi, CEO of the agency The Social Few. But the food giants highlight that special investments are being made in selected stores.