Add a description to each category

I have some categories and a page where shows all posts from this category. I want display a description for the selected category.

Thanks

Possible solution: enter the categories descriptions in user/config/site.yaml

categories:
    "category_1": "My category description"
    "cat_2": "Another cat desc"

and then use {{config.site.categories[category]}} inside your category Twig file, where category is the variable that holds the category name.