Roasted chana, also known as Bengal gram or whole black grams, is a type of chickpea that has been toasted until crispy. It's a popular snack in India and has been a household staple for centuries. Roasted chana is high in protein and fiber, and contains essential nutrients like calcium, potassium, manganese, folate, copper, phosphorous, and iron. It's also low in fat and has a low glycemic index, making it suitable for diabetics.