I suppose many people think that the apples no longer have any value, especially after the frost has gotten to them.
Actually these apples are perfect for making apple cider vinegar. The fermenting process has already begun in them, and you just have to encourage it.
If you do not have a garden, there are many trees with no owners and also apples like many other foods, get thrown away when they are still of value.
So making vinegar is not just something you get some lovely bottles of the essence of apple in(or pear or other fruit) - It is also a step towards being an environmental champion.
Click under "Recept Och Hälsotips" in the navigation bar and then under "höst och vinter". There you will find an easy recipe for making apple cider vinegar. It is in both Swedish and English.
Good luck on your mission!