For daily groceries there are small supermarkets in the villages of Plenee-Jugon (Intermarche) and Jugon Les Lacs (Carrefour).
Plenee-Jugon also has an excellent boulangerie for daily bread and croissants!
For larger supermarkets we recommend going to Lamballe (12Km) where there are large branches of Le Clerc and Intermarche. These are easy to find as you drive into town from the motorway. Both supermarkets have extensive fish and meat counters, fresh fruit and vegetables and a great selection of bread and cheese.
Many towns and villages have weekly markets where you can find fresh produce whilst soaking up the atmosphere. Dinan and Lamballe have excellent markets on Thursday mornings. Check here for a full list of market days in Cotes D’Armor: http://www.frenchmarketdays.com/cotes-darmor-22/cotes-darmor-22/