The Ying and Yang is a Limited-Time Event in Steal A Brainrot that provides players with the Ying & Yang Mutation. This is one of the rarest and coolest mutations that players can obtain due to their monochrome look. So, if you are wondering how this event works and how to get the Ying & Yang Mutation, here is a detailed guide.
How to get the Ying and Yang Mutation in Steal A Brainrot
As mentioned earlier, the Ying and Yang mutations can only be obtained during the Ying and Yang Event. This event is not periodic and can only be triggered by the server. When triggered, the event runs for a total of 15 minutes, indicated by the Yin-Yang icon at the bottom right of the screen.

Speaking about the event, you can find a large spinning Yin-Yang Icon in the sky with the entire sky covered in black + white clouds. At this time, you can find several Brainrots with the Ying & Yang Mutations walking down the central ramp. Simply, purchase them to add Brainrots with this Mutation to your base.
How does the Ying & Yang Mutation Look?
The Ying & Yang Mutation has a monochrome look, which means the entire Brainrot has a mix of Black and white appearance. Everything, from top to toe, has a dual texture. While this may appear pretty simple, I loved the color scheme as it has a unique flavor among the various vibrant themed mutations/traits.
What is the Ying & Yang Multiplier?

Any Brainrot with the Ying & Yang Mutation will have nearly its money production value increased by x6 times its original value. This is one of the highest in the game, and such mutated Brainrots are a must addition. For example, a normal Tim Cheese produces $5/s whereas a mutated Tim Cheese produces nearly $30/s.
For more on Steal A Brainrot, check out How to Complete All Rituals in Steal a Brainrot or Steal A Brainrot Extinct Event Guide - LA Extinct Grande