Soak the cashew nuts in cold water for about 4 hours. Peel garlic and chop roughly. Peel onion and cut into cubes. Heat oil in a pan. Sauté onions for about 5 minutes, add garlic after about 3 minutes and sauté.
Clean the jalapeño, cut lengthwise, wash and remove the seeds. Cut the pod into small pieces. Drain the cashews. Finely mix cashews, garlic-onion mix, starch, jalapeño and stock.
Cook the pasta in boiling salted water according to the instructions on the packet. Place cashew sauce in a saucepan and simmer until a thick sauce is formed. Season to taste with salt, pepper, chilli and cumin.
Drain the noodles and collect 1 cup of noodle water. Add the noodles to the sauce and dilute with some pasta water if necessary.
Wash parsley, shake dry, pluck off leaves and chop. Crumble the chips coarsely. Arrange noodles in a bowl and sprinkle with parsley and chips.