Related products are simply other products from the same product collection.
In This Article
How to enable related products
Head into Customize > Navigate to a Product page so your theme editor updates the sections > Under Products > Scroll down to Related Products > Check off "Show related products"
How to specify related products
If you would like a specific collection to be used for your product's related products, you can follow these instructions:
Create the related collection and make note of the collection's handle. The collection's handle can be seen by clicking 'Edit Website SEO' within the collection itself.
See below for an example:
More on collection handles here: find the collection handle →
Edit your product and add a new tag that specifies the collection's handle:
meta-related-collection-handle-name
The products in this collection should now be displayed in the Related Products section.
For more dynamic and customer targeted related products, you could try the Recomatic Shopify app.