Smoked Viennas Product Information 660g 24 viennas and 330g 8 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.