I've read that storing Ginger in wine vinegar or vodka preserves it. Is there something non-alcoholic that will do the same thing?
What non-alcoholic liquid can I use to store Ginger, both cooked and raw
gingerstorage-lifetimestorage-method
Related Solutions
It will definitely last longer in the refrigerator than at room temperature. You can also freeze it whole and then grate off what is needed as you need it.
Although white ginger and red (or pink) ginger do exist, the different colors in sushi ginger are from a dye. The color in white sushi ginger comes from the pickling process and the red/pink color in ink sushi ginger comes from an artificial dye (usually E124 -cochineal red- or in other brands beet extract). The generic name for sushi ginger is gari and here's the Wikipedia page.
White gari/sushi ginger on the left and pink gari/sushi ginger on the right.
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Best Answer
Vinegar is non-alcoholic, and my suggestion would be a brine of some sort, essentially pickling it. Alternatively you could just dry it out.
I should also add - Ginger is a root, and can generally be kept fresh in a cool dark place (ie. a root cellar) for some time.