def recipe_details(recipe_id, lang="en"):
    """This resource returns a details about a single recipe.

    :param recipe_id: The recipe to query for.
    :param lang: The language to display the texts in.

    The response is an object with the following properties:

    recipe_id (number):
        The recipe id.

    type (string):
        The type of the produced item.

    output_item_id (string):
        The item id of the produced item.

    output_item_count (string):
        The amount of items produced.

    min_rating (string):
        The minimum rating of the recipe.

    time_to_craft_ms (string):
        The time it takes to craft the item.

    disciplines (list):
        A list of crafting disciplines that can use the recipe.

    flags (list):
        Additional recipe flags. Known flags:

        ``AutoLearned``:
            Set for recipes that don't have to be discovered.

        ``LearnedFromItem``:
            Set for recipes that need a recipe sheet.

    ingredients (list):
        A list of objects describing the ingredients for this recipe. Each
        object contains the following properties:

        item_id (string):
            The item id of the ingredient.

        count (string):
            The amount of ingredients required.

    """
    params = {"recipe_id": recipe_id, "lang": lang}
    cache_name = "recipe_details.%(recipe_id)s.%(lang)s.json" % params
    return get_cached("recipe_details.json", cache_name, params=params)