1 pound seedless grapes,
1/2 cup water
Sugar to taste
Method:
Fill the jar of your blender 3/4 of the way with grapes and add a splash of water and sugar.
Blend on high at least 1 minute.
Strain through a fine-mesh sieve over a large bowl, pressing down on the solids in the strainer with a large spoon to extract every last bit of juice.
Serve chilled.