Three out of four restaurants closed for breaches of food safety last month were in Boyle, Co Roscommon.
It is the second month in a row that Roscommon was responsible for the majority of such closure orders.
These orders may be made where environmental health officers believe there is a grave and immediate danger to public health at the premises.
Closure orders were served in November on the Tai Chi Court restaurant, Bridge Street, Boyle; on the Royal Hotel (kitchen, cafe and external food stores), Boyle and on M&K Mireks Restaurant, The Crescent, Boyle.
The Food Safety Authority of Ireland said a closure order was also served on 3 in 1 Charcoal Grill take-away, 20 Northgate Street, Athlone, Co Westmeath.
Environmental health officers served an improvement order on De Seeds Restaurant & Bar, 8B Bridge Street, Balbriggan, Co Dublin.
Five successful prosecutions were also carried out by health officers in November. The businesses prosecuted were:
• The Natural Foods Bakery, Pier Head, Blackrock, Co Cork
• Millers Pizza, 50 Upper Baggot Street, Dublin 4
• Marguerites Bakery, Sheehans Road, Newcastlewest, Limerick
• Cashel Kebabs, 28 Lower Gate Street, Cashel, Tipperary
• Superquinn, McKee Avenue, Finglas, Dublin 11.
All five prosecutions related to hygiene regulations.
FSAI chief executive Prof Alan Reilly said a “zero tolerance” policy would continue in relation to breaches of food safety legislation.
Consumers had to be sure the food they were eating was safe, he said.