https://mypinoyrecipes.com/creamy-filipino-chicken-curry-with-potatoes-and-carrots/
https://www.yourfishguide.com/the-ultimate-guide-to-filipino-fish-sauce-patis-traditional-uses-recipes-and-modern-applications/
(cruddy autogenerated page)

https://www.tagaloglang.com/product/rufina-patis/
https://pinoygroseri.com/products/rufina-patis-25floz
https://www.epicurious.com/ingredients/chefs-best-fish-sauce-brands-article
Look for Rufina or Kamayan brand patis.