NRE (Menu 30) in Genshin Impact is a reward that can be obtained through the City Reputation system. This system will be added to the game in Update 1.1 on November 11. It allows you to complete quests, bounties, and requests for NPCs in the game’s cities, earning rank and rewards while doing so. Each city in the game has it’s own Reputation, and you can earn rank by doing missions, quests, bounties, and other activities in that region.
To get the NRE (Menu 30), you will need to hit City Reputation level 5 in Mondstadt. This will reward you with the NRE (Menu 30) blueprint, which you can then build at any crafting bench.
When NRE (Menu 30) is equipped, you will be able to quickly consume food without opening your Inventory. This gadget can hold one variety of HP-recovery dish and one variety of revival dish. NRE (Menu 30) will automatically offer the dish that best matches your party’s situation at any given time. If a party member falls during battle, the NRE (Menu 30) will automatically switch from offering you the healing meal to the revival meal.
You will be able to see exactly what is in the NRE (Menu 30) on the bottom right of the screen, and the corresponding hotkey you need to press to use it will also be shown there.