Food-freezing agent
Else clues• Carbon dioxide, when really cold
• Common refrigerant
• Coolant
• Cooling agent
• Fog machine material
• Fog maker at a haunted house
• Frozen carbon dioxide
• Halloween punch-bowl addition
• Haunted house supply
• Horror filmmaker's staple
• It may keep ice cream cool
• It sublimes at -109.26
• It's packed in some steak shipments
• Overnight-package cooler
• Packing material
• Picnic cooler
• Refrigerant trademark
• Solid carbon dioxide
• Solid carbon dioxide, familiarly
• Solid CO2
• Theatrical mist source
• Theatrical smoke source
• Useful refrigerant