I think that it depends on each person's individual body chemistry. It is safe, but a very painful and intense sensation for some people. If submissives are reluctant about trying it in scene but are curious about it and sort of on the fence I suggest experimenting in a non-scene context. For example, set aside a couple of hours where there's no D/s dynamic but look at it as a little project and let her try putting the ginger on different parts of her body for different amounts of time to see what the results are. I've done this with a femsub and electricity and it worked well. I allowed her to experiment with the erostek box on her own and to have control to see what the sensations would be like. That way she was more prepared and willing to let me take over and use electricity on her in scene. Does that make sense?

Courtesy of the Urban Dictionary

Figging is fun !!

A lot of the response you will get from your bottom will depend on how fresh the ginger is. I have had an anal plug and a vaginal plug of ginger on myself, and I have inserted a ginger plug in a couple of urethras along my kinky way Really fresh ginger can be much more intense than ginger that has been on the shelf for a while.

Peel your ginger and carve it into the shape you want, then pop it into the freezer for a while. As it warms to the body it is inserted in, it will begin to warm the body part. I found, personally, that it doesn't get nearly as intense as, say, a jalapeno slice, but it definitely gets warm. It also doesn't react to water like using a pepper does. Rinsing with cool water can help soothe the burn.

Rather than do other things while waiting for the ginger to take affect, I like to use some restrictive bondage, apply the ginger, then just wait. 20 minutes is about right and I happen to enjoy the squirming as the ginger warms up

K

Have you tried it out on yourself?

Before you preform an act on others you should always ether have it done to you or do it to yourself first. That way you can understand better what your sub is going through and can better mange pain levels and safety. Even though each person is different on how they perceive and process stimulation first hand knowledge is invaluable in maintaining thing at a level that was discussed in negotiations pre-scene.  

The best way to get your answers is to try figging on yourself. Experiment. From all I read it is safe, so just experiment a bit. If you really want your answers that is the best way to find out. I myself have no interest in it. I just follow the rule never to do a thing to others I have not done to myself or had done to me by others. It keeps things much more safe and sane.

I've added it to my to do list.