Stir in wine and cook, stirring, until all the wine is absorbed. Add hot seafood stock, ½ cup at a time, stirring constantly and letting all liquid absorb before adding the next ½ cup of stock. Repeat, stirring constantly, until risotto is creamy and cooked through. Add the zest of half a lemon, gently stir in the crab meat and allow to cook for 30 – 40 seconds.