What is the best way to extinguish a grease fire in the kitchen?

The best way to extinguish a grease fire in the kitchen is to smother it with a lid or use a Class K fire extinguisher. Grease fires are caused by cooking oils and fats, which can ignite at high temperatures. Using water to extinguish a grease fire is extremely dangerous because it can cause the oil to splatter and spread the fire. A garden hose is also ineffective for the same reasons, as water can worsen the situation.

Covering the fire with a metal lid or baking sheet effectively cuts off the fire's oxygen supply, which is essential for combustion, thus extinguishing the flames. Alternatively, a Class K fire extinguisher is specifically designed for kitchen fires involving cooking oils and greases. These extinguishers contain agents that can effectively smother the flames and put out the fire safely. Therefore, using either of these methods is optimal for safely handling a grease fire.