To make your own dried lime zest: zest your limes with a small-mesh grater and either leave the zest out to dry naturally or put it in a 200 degree F (95 degree C) oven for an hour or two, until it hardens up, then crush it with a mortar and pestle until it's small enough to use as a spice.
Per Serving: 2 calories;0 g fat;
0.6 g carbohydrates;
0.1 g protein;
0 mg cholesterol;
388 mg sodium.