Greens Soup with Pesto Garnish

Ingredients

• 4 tablespoons unsalted butter
• 1 large yellow onion or 1 bunch spring onions, diced
• 3 cloves garlic, chopped
• 1 1/2 # assorted greens-from turnips, radishes, spinach etc (about 6 cups), cleaned and roughly chopped
• 1 bunch broccoli, chopped
• 4 medium baking or yellow potatoes, peeled and cut into 1/2-inch cubes
• 2 bunches turnips, diced into 1/2 inch cubes
• 4 1/2 cups chicken or vegetable stock
• 1 cup heavy cream (or milk)
• salt
• pepper
• 1 cup fresh herbs, minced finely
• 1 bunch green onions, minced finely
• 3 cloves garlic, minced finely
• 1/2 cup nuts or seeds, minced finely
• 1/2 cup finely grated parmesan or similar cheese
• juice of 1/2 lemon
• 3-4 Tablespoons olive oil
• salt to taste