1-Begin by dissolving the sugar in the white wine vinegar with a quick stir, which takes just a moment and sets the base for that zesty flavor. Next, sprinkle the gelatine over this mixture, pop it in the microwave for 30 seconds to dissolve it fully, and let it cool a bit before moving on.

2-Now, peel your cucumber in alternating stripes for a nice look, chop it into chunks, and puree it until it’s coarse but not too smooth. Add the room-temperature cream cheese and pulse for about 10 seconds to mix it in, then blend in the sour cream until everything is silky. Incorporate the cooled gelatine mixture and give it a few pulses to combine, then toss in the fresh dill, celery salt, and black pepper, adjusting the seasoning to your taste for that perfect balance.

3-Grease your mini muffin tins with oil spray to prevent sticking, fill each one with the mousse mixture, and chill it for at least 4 hours or better yet, overnight for the best results. While it’s setting, toast your bread slices twice until they’re extra crispy, then cut them into small rounds that match the size of your mousse bites. Finally, carefully release the mousse from the tins using a thin knife and a gentle inversion, place each bite on a toast round, top with a shrimp and a sprig of fresh dill, and serve right away to keep everything crisp.