Elin Jones, the Welsh minister for rural affairs, opened the shop. Bidwells Agribusiness acted as the lead consultant for the development of the family business.
The project was led by Rob Ward, Bidwells' food retail and marketing consultant.
Eighty per cent of all the produce is sourced from Carmarthenshire and fruit and vegetables are bought in from local farms.
Bidwells guided the farming family from concept stage through planning and store design to helping project-manage the store fit-out and develop the supplier base. Cwmcerrig partner Rowland Watkins secured £50,000 of funding from the Welsh Assembly.
Stagecraft made the displays, which Ward based on US styles and claims are a UK first.
Ward said: "When I first went to visit the site it was literally a working farm and now, after six months' planning and four months' construction, it is a pioneering and unique retail centre offering leading-edge design and everything a customer or diner could want."