Green Peppercorn Mustard

In a blender grind mustard seeds finely. In a glass or ceramic bowl, mix together mustard powder and 3 tablespoons water and leave to stand 30 mins. Blend mustard mixture and the rest of the ingredients until mustard acquires a grainy texture. If mixture seems too dry, add a little more water or honey. Cover and let stand 12 hours before pouring into sterilised jars. Seal. Store in a cool, dark place 2 weeks before using. Refrigerate after opening.