Macaroni Salad Cook one pound of macaroni elbows and let cool. Cook about 2 cups of frozen peas until just done (not soft). When the macaroni and peas are cool, put in a mixing bowl. Add mayonaisse and two cans of drained tuna fish. Optional: celery, garlic, onions, mustard. Taste to see if it has enough salt and is creamy enough. Serve chilled.