Any country with a large territory can be said to be diverse. That said, I'm not entirely sure it's the most diverse, but certainly the diversity of Brazilian cuisine is huge - just like the country itself.

Brazilian Cuisine - Wikipedia

Brazilian cuisine is as diverse as the country’s population

https://agenciadenoticias.ibge.gov.br/en /agencia-news/2184-news-agency/news/21115-survey-reveals-regional-diversity-in-brazilian-food-intake

Brazilian food is not easy to define. Populations vary greatly from region to region, reflecting the mix of native and immigrant populations in the United States, as well as the size of the continent as a whole. This creates an ethnic cuisine that preserves regional differences. Basically, there are countless regional cuisines that make up a country's scene.

First: the basics!

The ingredients vary widely. However, there are basically 4 main foods/drinks that are ubiquitous almost everywhere:

Cassava, or cassava, is native to the Amazon region, grown by the indigenous people of Brazil, and is now one of the main ingredients in Brazilian cuisine one. Cassava is used in many different forms in the country's cooking, often as a side dish;

Bean, black turtle and pinto (known as "carioca") varieties. Pinto/carioca is the most widely consumed and used as the basic daily legume variety in the country, except in the states of Rio Grande Sur and Rio de Janeiro, where the black turtle variety is the main consumer;

Rice. Mainly long white rice, a main staple in Brazilian cuisine, mostly used as a side dish in many classic Brazilian dishes; and

coffee. Brazil is by far the largest coffee producer in the world, producing one-third of the world's coffee, so you can expect consumption in this country to be quite high as well.

The staple food in most regions is rice and beans, and cassava is eaten in many different ways. Everywhere, everywhere, people drink coffee.

I'll try to give you a clearer picture!

Typical rice and beans dishes:

Tapioca is mostly eaten as a seasoning powder side dish The, known as Farofa, looks like sand but tastes like heaven. There are thousands of varieties of farofa, but the most basic preparation involves roasted cassava flour:

Typical Brazilian coffee cup:

For your convenience, here is a map of Brazil, including each region, States and state capitals:

Because there is such a wide variety of cuisine here, I will try to highlight a few dishes and the general outline of each region, from south to north.

South. In the south, livestock farming was traditionally the dominant economic activity, while beef consumption was very high due to large immigration from Germany and Italy (as well as other Europeans).

Traditional Brazilian churrasco (Brazilian barbecue)—perhaps the Brazilian cuisine most commonly associated with people elsewhere on the planet—origins in the southernmost state of Brazil, the southern state of Sur. The meat is usually simply seasoned with rock salt and then cooked directly on an iron skewer over a fire.

In this state, one of the most popular dishes, besides the Brazilian barbecue, is arroz de carreteiro. It's basically made from rice, cooked meat or charque (spicy jerky) and some herbs (usually parsley). The Xi Tzu, a local take on the American burger, may be the state's newest addition to the traditional dish. It's basically a giant sandwich about 16cm in diameter (almost as big as a plate) filled with beef, chicken, sausage or any other meat, plus mayonnaise, corn, peas, lettuce, tomatoes, Fry eggs and mozzarella cheese and flatten. A variation of Xis Coracao, stuffed with chicken hearts, is a local favorite.