Cucumber snack

Boil the chicken meat, chill and slice thinly. Wash fresh cucumbers, cut in half. Cut each half obliquely into thin elongated slices. Boil the egg and finely chop. Finely chop the spring onions and garlic. Make mustard from mustard powder. Combine cucumbers, chicken meat, onions, garlic, add vinegar, mustard, vegetable oil, soy sauce, salt, sugar, sesame. Mix everything well and refrigerate. Sprinkle the chilled snack with thinly sliced pepper and egg.