def ingredients(func):
    def wrapper(*args, **kwargs):
        _ingredients = ['хлеб', 'кетчуп', 'сыр']
        for ingredient in _ingredients:
            print('---%s---' % ingredient)

        func(*args, **kwargs)

        for ingredient in _ingredients[::-1]:
            print('---%s---' % ingredient)

    return wrapper


@ingredients
def main_ingredient(meat):
    print('---%s---' % meat)


main_ingredient('ветчина')