Which extinguisher creates foam for commercial kitchen fires?

• A. Wet chemical extinguisher
• B. Class K extinguisher
• C. Multipurpose extinguisher
• D. Class D extinguisher

Answer: (C)

In a kitchen fire, you want an extinguishing action that quickly blankets the cooking oil and smothers the flames while cooling the surface. A multipurpose extinguisher is designed to handle a range of fire types, including oils and greases, and its foam-like blanket from the extinguishing agent helps cover the oil, reduce vapor release, and starve the flame of heat and fuel. This makes it well suited for commercial kitchens where fat and oil fires are a concern.

Wet chemical extinguishers are specialized for cooking fats and oils by creating a soapy layer through a chemical reaction, but that’s not described as foam. Class K targets kitchen fats with wet chemical as well, and Class D covers metal fires, which aren’t relevant here. So, the option that best aligns with creating a foam blanket to suppress a kitchen grease fire is the multipurpose extinguisher.