White Bean & Caramelized Onion Soup with Greens, Marjoram & Lemon

Ingredients

• 2 Tbsp (30 ml) olive oil
• 1 tsp coriander seeds
• 1 yellow onion, halved and sliced about 1/4" (6 mm) thick
• 1 pinch salt
• 2 garlic cloves, finely chopped
• leaves from 2 sprigs of marjoram, finely chopped
• 1 lemon
• 2 1/2 cups (485 g) cooked white beans such as cannellini
• 1 quart (950 ml) vegetable broth
• 1 1/2 cups (100 g) kale, chopped
• 1 cup (65 g) radicchio, shredded (optional)
• Freshly ground black pepper to taste