How about rectangular paper bowl

A rectangular paper bowl is a type of disposable bowl made from paper material, shaped in a rectangular or square form. Unlike traditional round bowls, rectangular paper bowls have straight sides and sharp corners, giving them a distinct shape.

Rectangular paper bowls are commonly used for serving a variety of food items, including salads, noodles, pasta, rice dishes, desserts, and snacks. They offer a practical and convenient option for serving meals or individual portions, particularly in takeout or catering settings.

These bowls are typically made from sturdy paperboard or heavy-duty paper with a food-grade polyethylene (PE) coating or lining. The PE coating enhances the bowl's strength and resistance to moisture, grease, and leakage, ensuring that the food stays contained within the bowl.

Rectangular paper bowls are often preferred in situations where space utilization is important. The straight sides and compact shape of the bowl allow for efficient stacking and storage, making them suitable for foodservice establishments with limited storage space.

Similar to other disposable paper bowls, rectangular paper bowls are designed to be disposable and are often biodegradable and compostable, making them an eco-friendly alternative to plastic or Styrofoam bowls.

It's important to note that specific features, sizes, and availability of rectangular paper bowls may vary depending on the brand, manufacturer, and intended use.