The Welsh government has announced that takeaways should promote food hygiene ratings on their leaflets from November. Any establishment that sells food will have to display the "scores on the doors" scheme on their flyers.
If the ratings change on a frequent basis, the establishments will not be forced to publish the actual rating on the leaflet itself, unless they choose to do so.
The new rule will come into force on November 28, to mark the third anniversary of the statutory Food Hygiene Rating Scheme in Wales.
Wales was the first country in the UK to create a statutory food hygiene rating scheme in November 2013 when the Food Hygiene Rating (Wales) Act 2013 made it compulsory for all food businesses to publicly display their score on their premises.
According to statistics more than 60% of food businesses in Wales have been awarded the highest score, a figure which is up from 33.2% in March 2012.
Deputy Health Minister Vaughan Gething said, "The introduction of a statutory food hygiene rating scheme has been a big success story for Wales, helping to drive up food hygiene standards in restaurants, pubs, cafes and other food business right across the country."
"The scheme has provided important information for consumers when deciding where to eat out or buy food. This has, in turn, played a significant role in encouraging businesses to improve their food hygiene standards."
"These new measures will enhance the statutory Food Hygiene Rating Scheme in Wales by filling a gap - people ordering food by phone do not have the opportunity to see the food hygiene rating of the takeaway business before placing their order."
"The display of the statement on leaflets will encourage consumers to view the rating online and to ask the takeaway food business for their food hygiene rating over the phone before ordering. I would like to thank local authorities in Wales for all their hard work in making this scheme a success," said Gething.