To a mixing bowl, add the tahini, white miso, sugar, chilli powder, soy sauce, veg stock paste and salt. Grate in the garlic and ginger then use a fork to mix everything together until well combined. Tip: You can also make larger batches and freeze it.
Divide the paste over four mason jars. Next, separate the pak choi into individual stems, divide the shiitake mushroom and instant noodles into four equal portions and break the tofu into large chunks. Use scissors to cut the nori sheet into 4 equal squares, then cut the squares into thin slivers. Finely slice the spring onions and toast the sesame seeds until golden. Now divide all of the ingredients including the chilli flakes and chilli oil over the four mason jars following the order of the ingredient list, so that they fit in nice and snug.
Close the jars with a lid and refrigerate until ready to use but not longer than 4 days. To serve, simply boil some water and fill up the jar. Cover it with the lid and let the noodles soften for 5 minutes, then stir and eat.