Okonomiyaki with shredded cabbage, daikon and fried noodles

Name: Okonomiyaki with shredded cabbage, daikon and fried noodles
Cuisine: Japanese
Ingredients: 160 ml dashi stock (see note) or water; 100 gm plain flour (1/3 cup); 3 eggs, lightly beaten; 1 small zucchini, coarsely grated; ½ small carrot, coarsely grated; 5 spring onions, thinly sliced, plus extra to serve; 200 gm Savoy cabbage, shredded; 2 tbsp vegetable oil; 4 thin rashers streaky bacon; To serve: Japanese mayonnaise, okonomiyaki sauce, fried noodles and thinly sliced pickled ginger and nori (see note)