Beef and Horseradish Stew with Kumara Potato Mash

Ingredients

• 2 tablespoons olive oil
• 1 1/2 kilograms beef chuck steak, cut into 5cm cubes
• 3 brown onions (450g), sliced into wedges
• 3 cloves garlic, crushed
• 8 centimetre piece fresh ginger (40g), grated
• 2 teaspoons curry powder
• 1/4 cup (35g) plain flour
• 3 cups (750ml) beef stock
• 1 tablespoon worcestershire sauce
• 2 tablespoons horseradish cream
• 1/4 cup coarsely chopped fresh flat-leaf parsley
• 1 kilogram kumara (orange sweet potato),chopped coarsely
• 500 grams potatoes, chopped coarsely
• 3/4 cup (180ml) pouring cream, warmed
• 50 grams butter