09 Jul 2018 --- Greenyard, the company at the center of a frozen vegetable listeria contamination scare, says its top priority is the on-going recall initiative working with supermarkets to call back certain batches amid concern that they could contain the bacteria. The fruit and vegetable giant tells FoodIngredientsFirst that production has stopped at its Hungarian vegetable plant while an in-depth investigation takes place into the potential listeria contamination.