recipe-site/_includes/ingredients.html

{%- assign tag = "h2" -%}
{%- if page.collection == "subrecipes" -%}
	{%- assign tag = "h4" -%}
{%- endif -%}
<{{tag}}>Ingredients</{{tag}}>
<ul class='ingredients'>
	{% for item in page.ingredients -%}
	{%- assign tag = "li" -%}
	{%- if item[3] -%}
		{%- assign tag = tag | append: " class='optional'" -%}
	{%- endif -%}

	{%- assign input = item[0] -%}
	{%- include fractionalise.html -%}

	{%- assign amount = output | append: " " -%}
	{%- assign end = "" -%}
	{%- if item[0][0] -%}
		{%- assign input = item[0][0] -%}
		{%- include fractionalise.html -%}
		{%- assign from = output -%}

		{%- assign input = item[0][1] -%}
		{%- include fractionalise.html -%}
		{%- assign to = output -%}

		{%- assign amount = from | append: " to " | append: to | append: " " -%}
	{%- elsif item[0] == 0 -%}
		{%- assign amount = "" -%}
		{%- assign end = " to taste" -%}
	{%- endif -%}

	<{{ tag }}>{{ amount }} {%- if item[2] %}{{ item[2] }} of {% endif -%} {{ item[1] }}{{ end }}</li>
	{% endfor %}
</ul>