Step 1

Bring sugar and 1¼ cups water to a boil and cook, stirring occasionally, until sugar is dissolved, about 2 minutes. Remove from heat and let cool.

Step 2

Combine sugar syrup and lemon juice in an airtight container.

Step 3

Store in the refrigerator for up to 3 weeks or in the freezer for up to 5 months.

Step 4

To serve, mix 1 part syrup with 1 part water. Pour over ice.