Preheat oven to 350 degrees. Line cupcake pans with paper cupcake liners. Sift together flour blend, cocoa powder, baking powder, baking soda, and salt. Set aside. In large mixing bowl, stir together coconut milk, water and vinegar, until slightly curdled. Add sugar, oil, and vanilla extract. Slowly whisk in flour mixture. Mix for 1 minute, until combined. Pour batter into prepared cupcake pan. Bake for 16-18 minutes, or until toothpick inserted in center of cupcake comes out clean. Place cupcakes on cooling rack and cool completely.