Where to get Chinotto extract?
I was also unable to find the extract, but I was able to find a site that allows you to purchase the chinotto sour orange tree!

Here you go: https://www.fourwindsgrowers.com/store/sour-orange-trees.html?page=shop.product_details&amp;flypage=flypage.tpl&amp;product_id=30&amp;category_id=8