simple syrup

noun
1.
a thick, sweet liquid, usually prepared from sugar and water and used chiefly as a base for soda fountain flavors.
Also called bar syrup, gomme syrup.
Examples from the web for simple syrup
  • As an alternative sweetener for the meringues, we're going to try seeping stevia leaves in water to make a simple syrup.
  • Waiting for simple syrup to cool always took so long.
  • Poach the slices in a simple syrup until translucent.
  • Although sugar is high in simple syrup as you have pointed out, there is no ban on serving syrup.