Step 1

To make the buns, put all the dry ingredients in a large bowl and mix well. Add 125ml/4fl oz lukewarm water and the oat milk. Mix with your hands and bring together to form a dough, then knead on a lightly floured surface for 8–10 minutes, until smooth and springy. Clean and lightly oil the bowl. Pop the dough back in the bowl, cover with a tea towel and leave in a warm place for 1 hour, or until doubled in size (if it's cold this may take up to 2 hours).

Step 2

Tip the dough onto a lightly floured surface and knead briefly to knock it back. Roll the dough into a fat sausage shape (approx. 30cm/12in long). Slice the roll into eight to ten equal portions and shape each piece into a rough ball. Lightly flour a rolling pin and roll each ball into an oval shape. Lightly rub a tiny drop of sesame oil over the surface (to prevent the dough from sticking together) and fold in half. Repeat until all the balls are folded, then place them on a flat surface, cover with a tea towel and leave to prove for 30 minutes.

Step 3

Preheat the oven to 200C/180C Fan/Gas 6.

Step 4

To make the cauliflower, mix all the ingredients together in a large bowl, adding 1 tablespoon of water to loosen the mixture, and marinate for 10 minutes. Tip onto a baking tray and bake for 35–40 minutes, or until crispy.

Step 5

Meanwhile, line a bamboo steamer with baking paper, then place three or four buns inside each steam basket. Steam for 6–7 minutes, until fluffy but firm and dry to the touch. Repeat until all the buns are steamed.

Step 6

Fill each bun with a teaspoon of sriracha mayonnaise and crispy cauliflower topped with shredded carrot, spring onion and ½ teaspoon of sesame seeds. Scatter with coriander, if using.