Prepare the Jelly Mixture:
Combine hot milk and jelly powder in a blender. Blend for 1 minute until smooth.
Add table cream, condensed milk, and pineapple juice powder to the blender. Blend until combined.
Assemble the Dessert:
Place green grapes in a dessert dish.
Pour the jelly mixture over the grapes. Smooth the top.
Chill the Dessert:
Cover the dish and refrigerate for at least 3 hours.
Serve:
Cut into slices and serve chilled.
