Wash peeled waterchestnuts, drain, chop into 1/4 dice.
Trim off any unattractive end of the spinach. Drop into pot of boiling water for 20-30 seconds. Drain well, dry with towel. Chop spinach finely.
In a bowl big enough for all ingredients, combine remaining ingredients except for the tomatoes. Whisk well. Add spinach and waterchestnuts and toss well with your hands.
Arrange on an attractive platter, cover with wax paper, then with plastic wrap. Refrigerate for hours. When ready to serve, remove covering sand arrange the tiny tomatoes in an attractive way.
Decorate lightly with shredded carrot and serve.