Place the hulled strawberries into the blender, ensuring they are evenly distributed for smooth blending.
Add the fresh lemon juice and a drop of lemon essential oil to the blender with the strawberries. Secure the lid.
Blend on high speed until the mixture is completely smooth, about 30-45 seconds, and no chunks remain. You should see a vibrant red-pink liquid with a slightly frothy surface.
Pour the mixture through a fine mesh strainer into a glass pitcher to remove any remaining solids, using a spatula to press through if necessary. Discard the solids.
Stir in cold water and sweetener to taste, adjusting until the lemonade is suitably sweet and chilled. Pour into glasses over ice if desired. Serve immediately with garnishes if preferred.