The award-winning pedigree cows from the Clandeboye Estate in Co Down are busy polishing their halos this week after securing a new supermarket deal. The company\'s new range of \'Heavenly Herd\' layered yoghurts has tickled taste buds at Sainsbury\'s and will be on shelves soon. The Heavenly Herd range has been developed by Clandeboye Estate Yoghurt in conjunction with the food development team at Loughry College.