In the Genshin Impact x McDonald's collaboration, players could purchase the "Genshin Meal," which included themed food items inspired by the game. The specific meal items may vary by location and region, but generally, the collaboration featured special menu items that could include burgers, fries, drinks, and potentially limited-edition promotional items such as toys or collectibles related to Genshin Impact characters.
For the most accurate and up-to-date information, including specific menu items available in your region, it's best to check McDonald's official website or app, or refer to social media announcements regarding the collaboration.