For a vegetarian version, omit the salt pork and use 2 tablespoons of butter or olive oil instead. Adjust the amount of ras el hanout to your preference. Start with 1 tablespoon and add more to taste for a more intense flavor. This sauce freezes beautifully. Store in airtight containers for up to 3 months. Serve over pasta, polenta, or roasted vegetables. It's also delicious as a base for shakshuka or other egg dishes.