Rehydrate the porcini mushrooms in hot water for 20 minutes. Finely chop the onion, carrot and celery. Smash the garlic clove. Chop 1 bunch of swiss chard into strips
Heat olive oil in a large pot. Add finely diced onion, carrot, celery, smashed garlic, and chopped rehydrated porcini mushrooms. Season with a pinch of salt and sauté for 5–8 minutes until soft and fragrant.
Salt, 2 tablespoon olive oil
Build the soup base
Stir in tomato puree. Reserve 1 cup of chickpeas and blend with some of their cooking water then add the rest to the pot. Add the chopped Swiss chard, and enough vegetable broth to barely cover everything. Stir in the blended chickpea mixture.