I tried my hand at making ginger syrup the other day. I took a cup of sugar, a cup of water, and about 1/2 cup of chopped ginger and boiled it until reduced by half or so, strained, then chilled. I didn't peel the ginger, just scrubbed it well and chopped in the food processor.
Wow, is that stuff good!
Be careful, it is potent. I wasn't suspecting exactly how potent though. I was on the phone with a friend, when I decided it had cooled enough for me to take a taste. Dipped a small spoon into my mouth, and yowsa! I think I just made an unintellible noise, but my friend was all what? what? what? Are you ok? When my tongue stopped burning long enough to speak, I told her what I had done. But it was incredible, sweet, gingery,fruity, but with a bite.
It makes a refreshing cold drink, a few tablespoons mixed into a glass of orange juice or lemonade or a sparkling water.
I am also going to try a ginger/lemon sorbet. And drizzling it over fruit salad. Maybe ginger glazed carrots? Green beans? Ginger syrup, soy sauce, and fish sauce as an Asian dressing/marinade?
I think next time I will peel it. The ginger bits tasted great too, but wasn't sure about eating the peel.