Photo: Martin Poole
Boil the potatoes in salted water for 20-25 minutes until tender.
In a bowl, mix together the ginger, spring onions, lime juice, rice wine vinegar and sugar. Mix the garlic in a large bowl with the Thai fish sauce, oil and chopped chilli.
Drain the potatoes and cut them in half. Toss in the ginger and garlic mixtures, then leave to cool. Add the cucumber and herbs to serve.