Preheat oven to 350 degrees F.

Combine milk and apple cider vinegar, set aside and let sit.

Mix together flour, baking powder, baking soda, and salt.

In a separate bowl, mix together sugar, vanilla, and oil.

Add all the ingredients together and whisk until smooth.

Bake cupcakes for about 25 minutes or until a toothpick comes out clean.

After cupcakes have cooled, cut a little hole at the top of each, add a teaspoon of jam into the hole and place the top part of the cupcake back on top.

Ice the cupcakes.

Take a straw and poke 2 holes at the top of the cupcakes.

Mix a tiny bit of water with some jam so it's more fluid, then drip jam out of holes to look like blood.