secret ingredient

He would go so far as to say that they are the secret ingredient of his success.

"They just have to ask for a special shape, with a secret ingredient."

"Could there be a secret ingredient in the wood that will make me normal again?"

Here is a report on how it went, and a "secret ingredient" that may have helped.

"That is the secret ingredient, the best flavor in the world."

As they return, secret ingredients are getting a contemporary spin.

But not, he hoped, on this job - if his secret ingredient worked.

At the start, each artist will be given a secret ingredient.

I also learned about a "secret ingredient" that seems to help my body dump water.

The secret natural ingredient, chocolate, has a lot of hidden health benefits.