Elden Ring PC | Armorer's Cookbook [5] location from Chamber Outside the Plaza site of grace #shorts

The Chamber Outside the Plaza site of grace is located within Redmane Castle.

Armorer's Cookbook [5]
"Armorer's Cookbook [5] is a Cookbook in Elden Ring. Cookbooks are records of crafting techniques that players can use to learn how to craft a wide variety of items."
https://eldenring.wiki.fextralife.com/Armorer's+Cookbook+(5)

Redmane Castle
"Redmane Castle is a Location in Elden Ring. The Redmane Castle is found in Caelid. It can be reached by crossing the bridge in-front of the "Impassable Greatbridge" site of grace. Follow the path upwards to the castle gate. Circle behind the castle using the path on the right hand side. After disposing of some enemies, there is a gap that you must jump across, it is recommended to use your mount for this section. There will be a small series of stairs leading to a shortcut, a door that can be opened only from the other side. To access the castle itself, you must climb up the ladder near said shortcut."
https://eldenring.wiki.fextralife.com/Redmane+Castle