I just loved my first mentor.
Not only did i meet her during my first job on the line , but she also got me the job im at now , at this amazing fine dining italian restaurant.
Me and her basically were book worms , so i have books signed with cute little notes from her , an she has some of mine too.
Aside from these presents on an off one of my 3 tattoos was actually in her honor.
If you dont want to get a knife ( because well chefs have knives ) i would go for something very meaningful to you as well as her. Doesnt need to be a tattoo but a book , maybe something hand made , <_< a necklace with a fork and a knife symbol
A picture of you 2 in a picture frame
A cute apron with her name on it
Hell even a key chain , as long as its from the heart. Im a firm beleiver that sometimes the thought actually counts more then the gift.