Makes about 4cups
Place the cucumber, green beans, snake beans and carrot in a glass or ceramic bowl. Add the cabbage, cauliflower and chillies. Add the salt, toss well, then set aside for an hour.
To make the spice paste, drain the dried chillies, place in a blender and add the lemongrass, galangal, turmeric, nuts and shrimp paste and process until a smooth paste is formed. Heat the oil in a wok over medium–high heat and fry the paste until fragrant, about 30 seconds. Season with the salt and sugar and set aside.
When the vegetables have been together for an hour, place the vinegar, shallots and garlic in a saucepan and bring to a simmer. Quickly blanch the vegetables in the pickling liquid, then drain.
Place the pickled vegetables in a bowl with the spice paste and mix thoroughly.
Acar acar will keep for a few days stored in an airtight container in the fridge.