Open-Faced Sandwich is a food item that can be used on a Pokémon to cure any non-volatile status or eaten by the player to restore 13 hunger points and 6.5 saturation
Obtaining
Cooking

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Usage
The Open-Faced Sandwich can either be fed to a Pokémon or eaten by the player.
Using the item will feed the closest Pokémon being targeted if nearby, or open the party selection menu if out of range.
Using while sneaking allows the player to consume the Open-Faced Sandwich instead.