Garden salad

Name: Garden salad
Prep time: 20 min
Total time: 20 min
Cuisine: British
Ingredients: 2 lettuce , such as cos or butterhead; handful one other salad leaf , such as watercress, rocket or mizuna; soft herbs , such as chervil, tarragon, parsley, chives; 1 garlic clove , crushed; 1 spring onion , roughly chopped; handful parsley; few sprigs watercress or rocket; 2 tbsp white wine vinegar; ½ tsp Dijon mustard; 6 tbsp olive oil