Half-fill a small saucepan with boiling water and add broccoli florettes. After 4 minutes add frozen peas and corn then add snow peas. Allow to boil for a further 4 minutes, strain and refresh under cold water.
Boil pasta in plenty of salted water until "al dente".
In a large bowl mix mayonnaise, sour cream, mustard, lemon rind, Season-All seasoning and salt.