EDAMAME, PEA AND BASIL SOUP

Serves 4

1 onion, chopped

3 garlic cloves, crushed

450g potatoes, peeled and chopped

160 g edamame beans (frozen) 

300g peas (frozen) 

750ml vegetable stock (more if needed) 

1 tsp frozen basil or a handful fresh basil

Salt and pepper