Serves 6 

For the coleslaw:
½ small green cabbage, thinly sliced
¼ small red cabbage, thinly sliced
1 carrot, peeled and grated
2 tbsp dairy-free, gluten-free horseradish sauce
4 tbsp apple cider vinegar
Salt and black pepper
For the aioli:
320g dairy-free mayonnaise alternative
4 tbsp gluten-free Dijon mustard
1 tsp ground cumin
1 tsp ground turmeric
1 tbsp dairy-free, gluten-free horseradish sauce
2 tsp pickle juice
1-2 tsp Tabasco
2 garlic cloves 
For the tempura prawns:
650g large prawns, peeled and deveined
300g rice flour
130g arrowroot or tapioca flour
1 tbsp salt
2 tsp black pepper
360ml sparkling water
Vegetable oil for frying
To serve:
12 slices gluten-free bread of choice, or 6 gluten-free rolls

1. In a large bowl, whisk together the flour, tapioca starch, salt and pepper. Toss all the prawns into the flour mixture and mix well. Place in the fridge for three hours.
2. For the coleslaw, mix all the ingredients in a large bowl and toss to combine well. Set aside.
3. For the aioli, combine all the ingredients in a food processor and whizz until blended. Set aside.
4. Add the sparkling water to the floured prawns and stir well to combine into a thick batter.
5. Meanwhile, add about 6cm of oil into a cast iron casserole or a deep stainless steel saucepan. Place over a medium-high heat.
6. When ready, give the batter and prawns a stir. Lift out the prawns one by one, allowing any excess batter to drip back into the bowl, and add to the hot oil. Cook in batches of 5-6 prawns for about three minutes, then keep warm in a low oven while you fry the rest.
7. Lift out using a slotted spoon and transfer to a heat-proof dish. Sprinkle a little salt over each batch while hot. Continue to cook in small batches until all are fried.
8. To assemble the sandwiches, lightly toast the bread and spread with some aioli. Add some coleslaw and prawns, then top with the other slices of bread.
9. Press down gently and slice in half, then serve with extra aioli on the side.

Per serving: 883kcals, 39.9g fat (7.3g saturated), 107.7 g carbs, 7.1g sugars, 20.8g protein, 8g fibre, 1.716g sodium