Make a simple syrup by bringing 1 cup water to a simmer in a small saucepan, then stir in sugar until it dissolves. Chill. (Use the freezer to do this quickly).
In a large pitcher, add simple syrup, lemon juice, and 6 cups water. Stir and add more water if desired.
Serve over ice or chill then serve.
To make lemonade concentrate:Make simple syrup and add lemon juice. Refrigerate for up to one week or freeze indefinitely. Add water when ready to make lemonade. Lemonade ratio:1:1:1:6 (1 cup water + 1 cup sugar + 1 cup lemon juice + 6 cups water)Calories are automatically generated. For best results calculate based on your exact ingredients.