Its name, Cascabel, which translates to rattle, comes from the sound it makes when you shake it. With its sphere, globe-like shape, the dried seeds have a lot of room to play and make noise in. Sometimes, because of that shape it is also called Chile Bola, as in ball (continue for more information and photo).
Different from most fresh chiles that are dried, it retains its shape and doesn't flatten out once it is dry. Also, different from many chiles, it maintains the same name when fresh or dried. It has a thick and smooth skin and a gorgeous deep brown color with red and sometimes copper hues. And its flavor resembles those colors: toasty, nutty and rustic with moderate heat.
The Cascabel is used in many ways from salsas to stews, to sauces and soups. It is used as is toasted, ground or simmered. It is not widely available outside of Mexico or even in some areas of Mexico. When I get my hands on some, I of course like to cook with the Cascabel Chiles, but I also get a good amount of pleasure admiring them as they sit in a bowl in my kitchen.