In Ember can I pass markup to a component?

I'm trying to create a dropdown type component that can have some markup for the title, and then upon hovering reveal more markup. Something like this:

{{#dropdown-menu}}

    {{#dropdown-header}}
        <span>My Custom Title markup</span>
    {{/dropdown-header}}

    {{#dropdown-body}}
        list of menu items
    {{/dropdown-body}}

{{/dropdown-menu}}

The body should only show while some property like isExpanded is true. But if the body is clicked, isExpanded would become false.

I can make a working component that accepts a title property (string), but I can't figure out how to make the title include custom markup.