Cooki and Milki is a duo Brainrot that was added to the Secret roster by the Steal a Brainrot Santa's Fuse update. Cooki is a large, round cookie with a chocolate beard and eyebrows, while Milki is a white mug with two legs. Currently, it is one of the top five highest-earning Secret Brainrots, fueling every player's goal to obtain it either from fusion or theft.
Let's take a look at the availability and income rate of Cooki and Milki in Steal a Brainrot.
About Cooki and Milki in Steal a Brainrot

There are two ways to get Cooki and Milki: acquire the character from the Santa's Fuse machine or steal it from another player. Both methods are tough since they require either the sacrifice of several Secret Brainrots or finding others who possess the unit.
Santa's Fuse machine
This structure, located next to the Coin Shop, gives a Christmas Brainrot when players submit four characters. The rarity and earnings rate of the deposited characters directly influence the possible units obtainable from the machine.
To get Cooki and Milki, it is essential to deposit Secret or OG Brainrots into Santa's Fuse. If you put a Brainrot God, the chance of getting a Cooki and Milki will disappear. Consider dropping a Swag Soda, a Los Mobilis, a Uniciclino, and a Mieteteira Bicicleteira in the machine to make Cooki and Milki appear as a possible fusion.
Stealing
If unsuccessful in acquiring a Cooki and Milki through fusion, try stealing the character from other players. Join public servers, scout for players who have the Secret Brainrot in their base, and enter it discreetly. The best gear to sneakily enter a target's base is to use the Invisibility Cloak, which is unlocked after four Rebirths and costs $300,000 in the Coin Shop.
Before stealing, make sure that the targeted player is AFK or busy. You can use items like traps and sentry guns to prevent them from pursuing while you take away their character.
Refer to this comprehensive guide to know about all the Brainrots available from the Santa's Fuse machine.
Best method to get Cooki and Milki in Steal a Brainrot

Even if you put high-earning Secrets in the Santa's Fuse machine, the chance of getting a Cooki and Milki would be low. This is why it's best to wait for the developers to boost the fuse machine Luck and then strive to get the Secret Brainrot.
To make a Cooki and Milki appear as a possible fusion, without any Luck boosts, deposit two OG Brainrots and two high-earning Secrets. For instance, you can submit Strawberry Elephant, Meowl, Mieteteira Bicicleteira, and Ketupat Kepat to receive a high chance of getting the cookie-based Brainrot.
Also check: Steal a Brainrot Santa's Fuse update patch notes
FAQs on Steal a Brainrot
What is the earnings rate of Cooki and Milki?
When unaffected by any Traits or Mutations, this Brainrot has an income rate of 155,000,000 Cash per second ($155M/s).
What is the sale price of Cooki and Milki?
This Brainrot can be sold for 50,000,000,000 ($50B).
Is Cooki and Milki rare?
Yes. This Secret Brainrot is among the rarest due to its low fusion chance in the Santa's Fuse machine.
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