Should I call what is depicted in the image "stir fried mixed vegetables", "stir fried vegetables" or "fried vegetables combination"?
For stir fry, I'm not sure how to write "stir fry" in past tense and continuous tense. Can I say these?
I stir fried vegetables yesterday.
I'm stir frying vegetables.
Stir fry (or stir-fry) can be used as a noun, for dishes which have been prepared with that method, as in
I cooked vegetable stir-fry yesterday.
I'm cooking up vegetable stir-fry for supper.
Chinese stir fry is also commonly heard, as the term originated in a Chinese cookbook; the Western counterpart to stir-fry is sauté.
To say vegetable stir-fry is to describe a particular dish, i.e. a stir-fry that has been prepared entirely with vegetables, as opposed to a chicken stir-fry or pork stir-fry for example. In contrast, vegetarian stir-fry describes a stir-fry which is vegetarian— unless it is made from vegetarians, I suppose.
When cooking for themselves, I don't think most people would refer to any dish as a combination, unless citing the title of a particular recipe. That term is associated with discounted options at inexpensive restaurants and fast food joints.
Stir fry can also be used as a compound verb, which you can use as you have proposed.
He stir-fries vegetables and tofu for supper every day.
I'm stir-frying the vegetables so they'll be crispy.
You can also use its past participle (adjectival) form to describe food that has been so prepared.
She prepared stir-fried vegetables yesterday.
You made stir-fried vegetables again?
