Preheat the oven to 180℃.
Line a muffin tray with paper cake cups.
Sift all purpose flour, salt, baking powder and baking soda together in a mixing bowl.
Wash and dry the blueberries on a paper towel or kitchen towel.
Add 1 tbsp of the flour mixture. Mix gently so the blueberries get coated with the flour.
In another mixing bowl add sugar, oil, yogurt, milk, vanilla extract and lemon juice.
Whisk well till the mixture appears smooth.
Add the flour mixture and blueberries.
Fold the flour into the liquid mixture just till the flour is wet.
Don't over mix.
Fill the cake cups ¾ of the way with the prepared muffin batter.
Sprinkle some sugar over the top of each of the batter in the paper cups.
Bake the muffins for 25-30 minutes.
Insert a toothpick in the middle of one of the muffins. If it comes out clean then the muffins are baked.
If not, bake them further for 5 minutes.
Remove the muffins from the muffin tray.
Allow them to cool down completely on a wire rack.
Enjoy egg free blueberry muffins for tea, as a snack, for breakfast or as a dessert.