Honey Tangerine & Ginger Martini

keith has a tiny, tiny cough - he didn't get enough sleep last weekend and is worried that the combination of lack of sleep and the disgusting weather might start wearing him down.  So I concocted a martini - strictly for medicinal use, you understand.  I wanted something with Vitamin C - and the Honey Tangerines called out to me.

I also thought some Ginger might be good, so I grabbed a bottle of Canton Ginger Liqueur.  The juice of 1/4 - 1/2 tangerine in a shaker, 3 parts vodka and 1 part Ginger liqueur.  Shake with ice, pour and serve.