CAJUN-STYLE PRAWNS WITH LIME SWEET POTATO MASH

Name: CAJUN-STYLE PRAWNS WITH LIME SWEET POTATO MASH
Cuisine: American, Latin American, Asian
Ingredients: 1 large sweet potato; ½ lime; 1 clove garlic; 2 spring onions (green and white parts); small handful of coriander (stalks and all); 1 red pepper; 20g butter; 2 tsp Cajun seasoning; 180g raw king prawns; Salt; Pepper