Step 1Slice the rhubarb and the ginger. Cut the vanilla pod lengthwise to split and open. Note: Rhubarb, ginger and vanilla are only use for infusing and will have an insignificant impact on the nutrition facts. I only counted about 20%. You'll need about 300 g (10.6 oz) rhubarb and one 2-inch piece of ginger for infusing the gin.