Breed a Cahoot with another monster that can produce Cahoot
Use the correct breeding combination for Rare Cahoot during its availability event
Check the current in-game breeding guide or official event schedule for the exact combo
Place the required monsters in the Breeding Structure
Wait for the breeding time to finish
If the result is not Rare Cahoot, try again during the Rare Cahoot event
Make sure both parent monsters are at the required level if the game requires it