Spiced beef hash

150g peeled potatoes, quartered or cut into big chunks

50g butter 

½ medium onion, diced 

1 garlic clove, minced 

pinch of dried chilli flakes (optional) 

sea salt

freshly cracked black pepper 

180g thinly sliced shreds of cooked spiced beef 

2 eggs, fried or poached (optional)