The inns are the fastest place to regenerate energy in Harry Potter: Wizards Unite. You can find them by traveling around the world map. Here you can collect ingredients for potions and grow new plants.
How does an inn work?
At the inn you can get one random dish every five minutes. Each dish regenerates a certain amount of energy points. This allows you to collect from 3 to 10 points every five minutes, allowing you to quickly regenerate your entire energy bar.
Afternoon Tea - 3 energy points;
Bertie Boots Beans - 3 energy points;
Pumpkin Juice - 3 energy points;
Tomato Soup - 3 energy points;
Bangers and Mash - 5 energy points;
Fish and Chips - 6 energy points;
Honey Dukes Bar - 6 energy points;
Butterbeer - 7 energy points;
Turkey Dinner - 10 energy points.