What is the English word for vegetable mustasa?

"Vegetable mustasa" is not a common English phrase. It's possible it's a regional term or a misspelling.

To help you find the correct term, could you please provide more information? For example:

* What is the context? Where did you hear this phrase? Is it in a recipe, a book, or a conversation?

* What is the dish? What kind of vegetables are used? What is the overall flavor profile?

* What language is the phrase from? This would help in finding a more accurate translation.

Once I have more information, I can give you a more accurate answer.