Combine peanut butter, rice vinegar, soy sauce, 1 tablespoon water, garlic, sesame oil, chili garlic sauce, honey, and ground ginger in a food processor or blender. Process until smooth (if you’re using chunk peanut butter, don't process until all the chunks are gone - the peanuts make it better!). If it's not coming together for you, slowly drizzle in the remaining 1 tablespoon of water until it reaches the desired consistency. Set aside about 3 tablespoons of the sauce - you will use the rest in the burgers.