The original apple! All modern varieties of apples are descendant from crab apples. They are mostly grown as ornamental trees these days, or for making jelly. For a bit more information see here.
At the moment I have crab apple pulp slow cooking with cinnamon, pimento, clove and honey. In a few hours I’ll check the consistency and bottle in tiny jars to use as a nice apple spread on hot buttered toast. The pulp is actually the by product of making the juice to make a crab apple jelly. I’ll try and get these organised and listed in the shop as soon as possible. I need to work out the best way to post goods, and at the moment it looks like the new Aussie post flat rate boxes will be great, or at least affordable. As long as I can get the packaging right.