Maybe somewhere in all this stuffing about with Keep they can add the ability to sort lists.
Mine was similar. As a teenager I used to make sandwiches as you describe with instant coffee granules instead of sugar. The granules would dissolve into the butter to form a brown caffeinated sludge. Yummo!
The YouTube channel The Tim Traveller has covered a few (along with a bunch of other esoteric sights, I really enjoy his stuff).
Example: https://youtu.be/iXSkjw0Kytk?si=J_X-3rbCluOcXRyz