Crispy tofu with noodles and cashews in sweet and sour sauce

Cooking time: 25 mins | 4 servings Ingredients: Tofu: 400 g natural or firm tofu 3 tbsp corn starch A pinch of salt Sweet and sour sauce: 200ml water 100ml ketchup 3 tbsp sugar 2 tbsp white wine vinegar 1 tbsp tomato puree A pinch of saltRoux: 1 tbsp corn starch 2-3 tbsp water Wok: …