Suggestion

Pressing the U key on the item first shows all synthesizable items, from which we then select to view the item recipe.
When the game has a large number of recipes, pressing the U key on an item, jei show all the synthesizable items for that item, and there are hundreds of pages or more to find out what it can synthesize. I think before that, it should show all synthesizable items in a slidable page. We look for items to synthesize from this page. 

This allows you to visualize all synthesizable items and reduces page flipping.

This has been automatically marked as stale because it has not had recent activity, and will be closed if no further activity occurs. If this was overlooked, forgotten, or should remain open for any other reason, please reply here to call attention to it and remove the stale status. Thank you for your contributions.

Thanks for the suggestion!
I implemented something similar to this, there is a new button on the bottom-left of the Recipes GUI. It will sort the results so that synthesizable recipes are shown first.

https://x.com/mezz_mc/status/1809810314399215729