Bring a medium saucepan of water to the boil for the noodles. Cook the noodles in the pan of boiling water for 7 mins or until tender (see Kitchen 101). Drain, then rinse under hot water to prevent the noodles from sticking.
Step 2 — Prep ingredients
Meanwhile, shred the zucchini and carrot using a julienne peeler or coarsely grate with a box grater.
Step 3 — Prep tofu
Cut the tofu into 2cm cubes.
Step 4 — Make stock
Put the stock powder and 1 tsp sugar in a heatproof jug, add 750ml (3 cups) boiling water and stir to dissolve. Stir in 2 tsp soy sauce.
Step 5 — Serve up
Divide the noodles, vegetables and tofu among bowls, then pour over the stock mixture. Scatter with a small pinch of chilli flakes, if using, and enjoy!
Step 6 — Kitchen 101
Stir the noodles every now and then while they are boiling to prevent them sticking together.