Name: Runner Bean Chutney
Prep time: 30 min
Cook time: 40 min
Total time: 1 h 10 min
Yield: 1
Ingredients: 1⅕ kg runner beans; 3 large onions, chopped; 700 ml white wine vinegar (ensure vegan, if needed); 100 g light brown soft sugar; 1 tbsp ground turmeric; 1 tbsp nigella seeds; 1 tbsp English mustard powder; 1 tbsp cornflour; 1 tsp fine sea salt; 65 g cornflour