Show a Categorie in listform A - Z

hello

I hope you can give me a little help. I want to create a table of contents in list form A - Z and I just can't get it right. I would like to select a category and display it, without pictures or anything else, only the title in descending form. As shown in this link:

http://www.foodwerk.ch/rezepte-nach-abc/

Would be very happy to receive a helpful answer

greeting
Cosimo