2 lb Elbow Mac, al dente' and cooled with a tab of salted butter/margarine. Zest and juice of 1/2 a lemon, mince yellow and red sm onion,finely chop half a red/gr pepper, 3 carrots,4 stalks celery,3 tbls yellow mustard,2 tbls garlic, 4 oz sweet relish, 4oz mayo or sweet vinegret (your choice, as...