Cavolo nero, meatball & cannellini soup - Good Food Middle East

Ingredients

• 2 tbsp olive oilor rapeseed oil
• 6 sausages(we used Cumberland)
• 1 red onion
• 3 garlic cloves, crushed
• 1?2-1 tsp chilli flakes(optional)
• 200g bag cavolo nero, kale or other hardy greens, chopped
• 2 x 400g cans cannellini beans
• 1 chicken stock cube
• 1 lemon, zested, plus juice of 1?2