Shortly before the games’ launch, players already discovered sandwich recipes that help increase the spawn rate of certain types of Pokémon in the wild. Reportedly, this can help mitigate a lot of your Shiny Hunting efforts.
Just like in real life, you can never have too much good food in the latest Pokémon games. It’s time to see which meals and recipes work best for you on your adventure!
Pokémon Scarlet and Pokémon Violet are now available exclusively on the Nintendo Switch.
Source: https://www.distractify.com/p/how-does-food-work-pokemon-scarlet-violet