Add olive oil to a pint-size mason jar. Wash one of the blood oranges thoroughly, then zest the outside of the orange into the jar of oil. You can zest anywhere from 1/2 to 3/4 of the orange, depending on its size. Aim for around 1 tsp of zest.
1/2 cup extra virgin olive oil, zest from one of the blood oranges
Quarter the blood oranges and squeeze the juice into a separate jar or cup and measure out 1/3 cup juice. Remove any seeds that fall in while juicing. Pour the juice into the jar of oil.
2 blood oranges
Add the white wine vinegar, honey, dijon, salt, pepper, garlic powder, and shallots. Put a lid on the jar and shake vigorously to mix.
Store in the mason jar with a cap in the refrigerator. Use within 3-4 days.If the oil in the dressing starts to solidify in the cold, remove from the fridge an hour before you want to eat it so it can warm up, then shake to remix. You can also set the jar in a bowl of warm water for a few minutes, then shake.