It is very well known in Paraguay, Chile, Argentina, and Brazil.
All these Latin American countries are fortunate to have yerba mate cultivation, which is used to make burnt coffee and the famous mate and tereré (cold drink), also very popular among Argentinians.
One of the oldest traditions is waking up early to enjoy an incredible burnt coffee. It is mostly enjoyed by rural folks and adults, as these are quite old customs.
Many people have the habit of skipping breakfast, which is already risky for health since breakfast is the most important meal of the day.
Besides being delicious, burnt coffee is commonly consumed at breakfast, whether black or with milk, as it acts as an antioxidant, reduces cholesterol, and lowers the chances of fat forming in the arteries.
The preparation involves boiling water, placing yerba mate and sugar in a container or plate, and then adding a lit coal ember so that the sugar and yerba fuse together. Afterwards, pour the water through a sieve or colander.
It is very common to accompany it with milk or the traditional coquitos.
There are somewhat more "modern" versions of burnt coffee, such as the well-known tea bags version, which is mostly consumed in Argentina, but of course, it doesn't have the same flavor, aroma, nor does it represent this tradition.
