First I'll explain the sauce, you can skip this step if you've bought a dipping sauce for $2. Sweet chilli is fine, soya sauce is not recommended.

Simply make a 1:1:1 mix of black and gold lime juice, fish sauce, and vinegar. Ideally rice or red vinegar. Then add minced garlic, ginger, coriander, mint, red chilli. Again just use whatever you've got.