Makrut Lime Mousse With Honeydew Water

Preparation

1. Make mousse:

   Step 1

   Stir together 1/3 cup cream, sugar, lime leaves, zest, and a pinch of salt in a small heavy saucepan and bring to a bare simmer over moderately low heat, stirring until sugar is dissolved. Remove from heat and let steep, covered, 25 minutes.

   Step 2

   Sprinkle gelatin over water and lime juice in a bowl and let soften 1 minute. Return cream mixture to a simmer, then pour through a very fine sieve into gelatin, pressing on and discarding solids. Stir until gelatin is dissolved, about 1 minute. Gradually add yogurt, whisking, and chill, covered, 30 minutes. (Mixture will not be gelled.)

   Step 3

   Beat remaining 1/3 cup cream in a chilled bowl with whisk until it just holds soft peaks. Fold into yogurt mixture and chill, covered, at least 8 hours. (Mousse will be softly set.)

2. Make honeydew water:

   Step 4

   Blend honeydew, Midori, lime juice, and a pinch of salt in a blender at high speed until smooth, about 1 minute. Pour through a fine sieve lined with dampened cheesecloth into a bowl. Let drain, undisturbed, 30 minutes, then discard foam remaining in cheesecloth.

   Step 5

   Sprinkle gelatin over water in a small saucepan and let soften 1 minute. Add 2 tablespoons melon juice and sugar, then cook over low heat, stirring, until gelatin and sugar are dissolved, 1 to 2 minutes. Gradually whisk in 1 1/8 cups melon juice (reserve remainder for another use if desired), then transfer to a bowl and chill, covered, at least 8 hours. (Honeydew water will be barely set.)

3. Assemble dessert:

   Step 6

   Spoon honeydew water onto 4 dessert plates and top with shiso leaves. Spoon mousse onto leaves.