Soften gelatin in cold water in a small bowl.

Combine melon puree, sugar, and lemon juice in a medium saucepan.

Heat on low until sugar dissolves.

Add softened gelatin to the mixture on the stove.

Heat and stir until gelatin dissolves.

Remove from heat and chill in the fridge until thickened.

Whip cream in a large mixing bowl to soft peaks.

Add vanilla to melon mixture.

Fold whipped cream into the melon mixture until smooth.

Pour into individual serving glasses.

Chill in the fridge until set, at least 45 minutes.

Garnish with fresh mint and serve.