The Hang Around Closet set comes with the base closet pieces, clothes, and accessories. This is the base part that include three different rack styles, closet doors, and mirror/style board inserts.
This is a an ingredient that can be used in my other custom recipes and can be purchased from my Brazen Delivery service if you don't want to craft it. This includes a recipe that will allow your sim to create a barrel of vinegar mash from my Preserving Shelf or the Brazen Homestead Craftbooks. Once created, that barrel can be aged and vinegar can be collected from it at different stages. That can then be used as an ingredient in other recipes.