Clean lamb's lettuce, wash thoroughly and drain. Peel and wash carrots and celery and cut or grate them into very fine sticks. Peel and finely chop the onion. Mix vinegar with salt, pepper and sweet chili.
Add onions and oil, stir in. Arrange five slices of pork belly with salad and vegetable strips on plates. Spread some vinaigrette over them. Serve the rest separately.