Steam sweet potatoes for 10-15 minutes until soft and mashable.
Fold in wild garlic and mix.
Next add the potato starch and knead around 10 minutes.
Split i nto 4 and rroll into sausages before cutting into small pieces and rolling into ball shapes using hands.
Using a beer bottle, make an indent into the dough to make it pretty.
Boil for 5-6 minutes or until floating to top.
For the chilli oil, in a wok or saucepan, heat the rapeseed oil over medium heat until hot.
Add the bay leaves, star anise, cinnamon stick, Sichuan peppercorns, and sesame seeds to the oil. Cook for 2-3 minutes, stirring occasionally, until fragrant.
Add the salt, sugar, chili powder, and chili flakes to the wok and stir to combine.
Cook the mixture for another 2-3 minutes, or until the chili flakes start to turn a darker red color.
Remove the wok from the heat and let the chili oil cool for 5-10 minutes.
Once the chili oil has cooled slightly, strain out the solids using a fine-mesh sieve or cheesecloth. Discard the solids.
Transfer the chili oil to a clean jar or container and store in the fridge for up to 1 month.