1.Cook pasta in a large saucepan of boiling salted water for 10 minutes or until tender. Drain.
2.Meanwhile, whisk mustard, horseradish cream and oil in a large heatproof bowl. Season. Add salami, beef, pancetta, onion, tomato and parsley. Toss to combine.
3.Add pasta to salami mixture. Toss to combine. Serve warm.
Use any selection of leftover roast meats or sliced deli meats. Replace the mustard, horseradish and oil with 1/4 cap bought creamy mustard dressing. Fast cooking: Choose small pasta shapes or very thin long pasta; they cook faster.