Isolation will not really work with a dog. You are simply removing her from the situation rather than showing her that her behaviour is unacceptable, and dogs don't make the connection with their behaviour and 'time-out'.
I always correct my dog with a noise first (whatever works, I use 'ah ah' or 'shhht', just a short sharp noise), and if she doesn't respond appropriately, I use touch to back it up (wherever the dog will take notice, can be the neck or the side of the dog). I make her lie down and keep correcting her 'excited' behaviour until she is relaxed and lying down. Once she is completely relaxed I then fuss her.
I would suggest trying the methods mentioned above would be an option, but the method I have outlined works brilliantly and gets fast results.
Do also make sure that the men do not make eye contact, in fact they should completely ignore her and even stand sideways on to her as well, so that it's obvious by their body language that her behaviour is not getting any attention or reaction.
My pup is a bit of a nightmare with growling at people through windows, car windows or the flat windows, and over a week or so I'm managing to nip it in the bud at the first grumble and get her lying down and calm within a minute (down from a big power fight lasting nearly 10 minutes!). The first time you correct, you may find it takes up to 10 minutes or more to get your dog lying down, calm and responding appropriately to the sound and touch you give as correction.
What you need to do is teach her that you are boss, you are fine with men, and so she should be fine with men too. Once a dog is comfortable with it's owner as boss, it takes its cue from them.
It's important also to be sure you are calm and relaxed when men enter the kitchen, otherwise she'll definitely pick up and respond to your tension.
Best of luck with her.
She's gorgeous!