Ingredients
Method
1.Heat oil in a large frying par: over moderate heat. Cook and stir onion, rhubarb and cardamom for 5 minutes or until rhubarb softens. Add sugar and vinegar; bring to a simmer. Cook and stir for 5 minutes or until mixture thickens. Strain through a fine sieve into a bowl, pressing with the back of a spoon.
2.Combine flours in a large bowl. Make a well at centre. Add egg and soda water; whisk until a smooth batter forms.
3.Heat extra oil in a large heavy-based saucepan over moderate heat (oil is ready when a cube of bread crisps quickly without absorbing oil).
4.Dip prawns in batter; deep-fry, in batches, for 2 minutes or until golden and cooked. Using a slotted spoon, transfer to paper towels.
5.Place prawns on serving plates. Garnish with dill and mint. Serve with salad, lime cheeks and vinaigrette.
No cardamom pods? Use 1 teaspoon ground cardamom instead. No rice flour? Use plain flour instead. Reheat oil for deep-frying between batches if necessary.
Note