Cut the chicken breast into pieces, drizzle with a little soy sauce and let it soak for a few minutes, then cover with the flour, not too thick.
Heat the oil in the wok and deep-fry the chicken pieces until they are light brown and crispy, then remove them and place on kitchen paper.
Fry the raw cashew nuts in the same oil on a low flame until light brown. The oil must not be too hot, otherwise the nuts will become bitter. Take out and in the same oil fry the chili peppers for a few minutes without burning them.
Mix the Sriracha, oyster sauce, sugar, soy sauce, fish sauce, sesame oil and water in a bowl.
Pour off the oil from the wok except for 2 tablespoon. Heat the wok again and fry the garlic briefly, then add the onions and sauté. Add the meat again, then the sauce mixture, stir a little, then add the cashew nuts, chilli and spring onions and fry everything for 1 - 2 minutes.