Blend Blueberries: In a blender, combine 1½ cups of blueberries, 1 cup of cold water, and ½ cup of maple syrup. Blend on high for about 30 seconds or until smooth.

Strain Mixture (Optional): Strain the blueberry mixture through a fine-mesh sieve to extract as much liquid as possible. This step is optional; leaving the pulp creates a thicker lemonade.

Combine Ingredients: In a pitcher, pour the strained blueberry puree or blended mixture. Add ¾ cup lemon juice and 3 cups cold water. Stir gently until combined.

Adjust Sweetness and Flavor: Taste and adjust sweetness with additional maple syrup or tang with more lemon juice as needed. Stir well.

Serve and Garnish: Fill glasses with ice, pour lemonade over ice, and garnish with blueberries and a lemon slice.

Store Leftovers (If Any): Pour any leftovers into an airtight container and store in the fridge for up to 3 days.