Catalogue
{{ collections.collection-1.title }}
{% for product in collections.collection-1.products %}
// code to output products
{% endfor %]
{{ collections.collection-2.title }}
{% for product in collections.collection-2.products %}
// code to output products
{% endfor %]
{{ collections.collection-3.title }}
{% for product in collections.collection-3.products %}
// code to output products
{% endfor %]