In a large bowl add eggs and beat with a hand mixer for 1-2 minutes until thick and frothy.
Mix in sugar and oil and mix until creamy and combined
Add vanilla, vinegar, baking soda and salt.
Using a wooden spoon mix in the sour cream and then the flour. Mix until combined, batter will be lumpy but don't overwork it.
Fold in blueberries. Be gentle so they don't break!
Bake for 15- 23 minutes. Start with 15 and check every 5 minutes so you don't overcook them. Top should have golden brown edges and middle should be clean when a toothpick is inserted.
Cool on a baking rack and serve.