岡持ち

1. Origins, structure, and basic meaning

• Structure: 岡持ち (おかもち) is a traditional box used to carry prepared food for delivery.
• Basic usage: 岡持ちが置かれる presents the box as an exhibit; 丼を岡持ちに入れる presents it as the container for a bowl.

2. Common pitfalls and similar expressions

• Exhibit object and delivery container
  • The box takes が when it is displayed and に when it is the destination for food; its defining role is delivery.