How to create the perfect RSS feed with Drupal 10 or Drupal 11

Update: I've checked and updated this tutorial so that it works on a Drupal 10 or Drupal 11 website. It should still work for Drupal 8 and Drupal 9 as well. Please let me know in the comments if you have any troubles in either Drupal version.

Before we start

In this example I will show nodes in a RSS feed of the ‘Article’ content type, which I’ve already created. This article content type contains an Image field (learn how to efficiently reuse your image fields) and a Summary field of the type Text (formatted, long). I prefer using a separate Summary field instead of the default Body with the built in summary option, because this gives me more flexibility.  

It’s also highly advisable to install the Publication Date module. This will add an extra field to your content type containing the date the node was actually published. You will need this date to correctly display nodes in a feed.

You can also use the creation date, but this might not always be the date stamp you want your nodes to have. If, for example, you’ve started a draft and finally publish the node a few days or weeks later, the creation date will lag behind the actual publish date. This can mess up the way your articles are displayed in an aggregator such as Planet Drupal.