01 - Remove grapes from stems, wash thoroughly under cold running water, and pat completely dry with paper towels.
02 - Portion flavored gelatin powders into separate shallow bowls or plates to create individual coating stations.
03 - Lightly mist grapes with water or lemon juice using a spray bottle, or gently toss grapes in a bowl to coat them evenly with moisture.
04 - Working in batches, roll the damp grapes thoroughly in the gelatin powder until each grape is evenly coated.
05 - Set coated grapes on a parchment-lined tray, ensuring they remain in a single layer for best chilling results.
06 - Refrigerate for at least 1 hour to allow the coating to set and grapes to chill.
07 - Serve the grapes chilled to highlight the sour and sweet flavors.