Chicken Viennas with Cheese Product Information 330g 8 viennas, 660g 16 viennas, 1kg 24 viennas Ready to eat. Keep refrigerated below 5°C. Consume within 2 days of opening. Cooking Instructions Stove top: Remove viennas from packaging and pre-heat in boiling water for 2-3 minutes.Microwave: Remove viennas from packaging and microwave on high in a dish with a little water for 2-3 minutes. Cooking guidelines may vary with appliances.