Secret almond milk breeds disgust.

If you're handed something the person calls "milk" and it tastes funny you spit it out in disgust.

"This milk has gone bad!"

"No, it's almond milk."

"You should have said that at the start!"

The problem is not the almonds, the problem is the secret.

If you just own it then people's expectations will be more resilient to it tasting unlike normal milk.