“Many recipes will have you stirring sugar into room temperature water periodically over the course of 10–15 minutes, but Drink What You Want author John deBary swears by an unconventional cold process: busting out the blender.
“I usually need to use [simple syrup] right away,” deBary says, “but that’s hard when it’s hot!” Blending sugar and room temperature water together on high for a full minute, then allowing it to settle for another full minute, makes for simple syrup that can be used in an instant.”