Combine purslane, parsley, oregano, garlic, red pepper flakes, olive oil and red wine vinegar in a small food processor. Process until smooth.
Taste and add salt and pepper as needed. Consider adding more red pepper flakes (heat) and/or red wine vinegar (acid).
Cover and refrigerate for at least 2 hours or overnight so that flavors may develop. Sauce keeps refrigerated for a week or frozen for a month.
Notes
* Don't have any purslane? You can still make this sauce – simply double the amount of parsley. * While we served it on the side as a dipping sauce, you can also use it as a marinade or basting sauce while grilling.