Refreshing, sweet, and easy-to-make sparkling blackberry lemonade
Combine the 2 cups of water and sugar in a saucepan. Stir to combine and bring to a boil. Stirring occasionally, boil this mixture for 2 minutes.
Remove sugar water from heat and add in the lemon zest and lemon juice. Cool slightly.
Add the blackberries to the blender and pour over about 1 cup of the lemon water mixture. Blend until completely smooth. Place a fine mesh strainer over your pitcher and using the back of a spoon, press the blackberry juice through the strainer into the pitcher discarding the seeds.
Add the remaining lemon mixture to the pitcher. Stir well. Add the seltzer water (add to taste preference -- more seltzer water for a more diluted drink). Only add seltzer water to what will get drunk within 1-2 hours otherwise add the seltzer water to individual glasses.
Serve over glasses filled with ice (the ice also dilutes the lemonade a bit)
*This is pretty sweet lemonade depending on the berries and lemons you have; feel free to reduce the sugar to your personal preference.