Sambal OelekPlace chilli, garlic, ginger and lemongrass into mixing bowl and blend 10 sec/speed 7. Scrape down sides of mixing bowl with spatula.Add rice wine vinegar, palm sugar, salt, lime zest and lime juice and blend 10 sec/speed 7. Scrape down sides of mixing bowl with spatula.Add peanut oil and cook 8 min/90°C/speed 1. Allow to cool before transferring into an airtight container and storing in the refrigerator until ready to use.