Everyday Special

I suppose you are referring to "blue plate specials" that are commonly found in restaurants across the USA.

A "blue plate special" is a term that has been used in American English to refer to a low-priced, unpretentious, home-style meal, typically served at lunchtime in diners, cafeterias, and restaurants. The name "blue plate" comes from the fact that the meal is often served on a divided, often blue-colored, plate, which helps to keep the food portions separate and visually appealing.

The components of a blue plate special can vary widely depending on the restaurant and the region of the country, but they typically include a meat dish (such as fried chicken, roast beef, or salmon), a starch (such as mashed potatoes, rice, or pasta), and a vegetable (such as green beans, peas, or corn). Some Blue Plate Specials may also come with a side salad, bread, or a roll.

Blue plate specials are often featured on menu boards or chalkboards outside the restaurant, and they can be a great way to get a satisfying and filling meal at a reasonable price. They have been a staple of American dining culture for many years, and they continue to be a popular option for budget-conscious diners today.