Here's a small victory for a Twig noob

Basic Twig

<div id="breadcrumbs">
    {% for breadcrumb in breadcrumbs %}
        {% if not loop.last %}
            {{ breadcrumb | raw }} {{ breadcrumbs.separator | raw }}
        {% else %}
            <strong>{{ breadcrumb.label }}</strong>
        {% endif %}
    {% endfor %}
</div>