Without letting her know of course.
Most Helpful Girl
lel I read the question wrong and thought you were asking if taking her to the restaurant you own would be cheap as in price wise. XD I take back my vote since that's not what you meant.
It's not cheap and would be an awesome idea and once you ever decide to tell her about it that would be a huge surprise.1
Most Helpful Guy
No and it's for the better. She shouldn't know that you own a restaurant at the beginning because that would heavily influence her opinion of you. Of course, it could work in your favour if you actually want to impress her with that - but the flip side is that she might be less attracted to you, and more attracted to the "status" that your restaurant gives you.2