Place the coriander seed, star anise and cinnamon quills into a small skillet and place over a medium high heat for 3 minutes, tossing regularly then add them to a pot with the broth, ginger, lemongrass, palm sugar and fish sauce.
Place this over medium heat to simmer and infuse for 20 minutes then strain and keep hot over a low heat, covered with a lid.
Meanwhile, Preheat the skillet over a high heat, season the beef with salt and then add the olive oil and beef to the pan, searing for approx. 2 minutes each side to caramelise then transfer to a plate.
Peel the carrot and use the julienne peeler to shave it into strips then use the same peeler to shave the zucchini into strips. Finely slice the snow peas into thin matchsticks.
Evenly divide the prepared zucchini, carrot, snow peas and beans sprouts between two bowls.
Thinly slice the seared beef against the grain and lay over the veggies then scatter some shallots.
Pour the hot broth over the bowls and finish with the coriander more shallots and a squeeze of lime.
Serve with chilli sauce if desired.