蒸す

1. Origins, structure, and basic meaning

• Structure: 蒸す is read as むす and is a verb meaning to steam food or for weather to be muggy.
• Basic usage: Steaming potatoes appears in ジャガイモを蒸す, while muggy weather outside appears in 外は蒸している.

2. Common pitfalls and similar expressions

• Cooking and weather senses
  • With food as the object it is cooking; with a place as topic it describes humid heat.
• Difference from 茹でる
  • 蒸す cooks with steam rather than in hot water.