futtern/templates/food_order/orderitem.html.twig

{% extends 'base.html.twig' %}

{% block body %}
    {% include('_form.html.twig') %}
    {% include('_form.html.twig') with {'form': extraForm, 'button_label': 'add extra'} only %}
    <datalist id="item-extra-list">
        {% for item in extras %}
            <option value="{{ item.name }}"></option>
        {% endfor %}
    </datalist>
{% endblock %}