<p>Caution is required when blending hot soup. The reason: Hot liquid creates pressure in the closed blender. When the motor runs, pressure builds, causing the soup to forcefully escape through the lid. To sidestep splatters, try this: First, fill the blender no more than halfway with soup. Then, crack the lid to release steam. Cover top with kitchen towel and hold the lid as you blend, gradually increasing the motor’s speed. The results: Smooth soup and a clean kitchen!</p>