Step 1

In a medium saucepan, bring 1 cup of water to a boil over medium-high heat. Add sugar and stir until dissolved. Stir in lemon juice and remove from heat.

Step 2

Transfer the mixture into a large pitcher and add 2 to 4 cups of cold water to your desired taste.

Step 3

Refrigerate until the lemonade cools completely, about 30 minutes.

Step 4

Serve with lemon slices and ice, if desired.