Okay, so do you know how when you roast marshmallows over a campfire, they turn brown and crispy on the outside? Torrefacto is kind of like that, but for coffee beans.
When you make coffee, you usually start with green coffee beans. But some people like to roast their coffee beans in a special way called torrefacto. This means they roast the beans with sugar, which makes them turn dark brown and shiny on the outside, almost like chocolate.
Why do they do this? Well, it's said to give the coffee a unique taste - it can be a little bit sweeter, and some people say it has a stronger flavor. Plus, the sugar helps the beans roast more evenly and reduces some of the bitterness that can come from over-roasting.
So basically, torrefacto is when you roast coffee beans with sugar to give them a different taste and appearance. It's like roasting marshmallows, but for coffee!