Portuguese Kale Soup (Caldo Verde)

Caldo verde (green soup) is a traditional Portuguese soup based on olive oil, potatoes and kale.  The many variations may contain onions, beans, chorizo (sausage) and other ingredients, but this recipe is the simple version that you might imagine fishermen and farmers enjoying to economically sustain their labors.  It is unexpected that the base is water rather than stock, but the resulting soup is thick and satisfying. 

Proper preparation requires some time to cook down the potatoes, creating a surprisingly creamy broth.  But rest assured, while the total time can approach two hours, active preparation time is 30 minutes or less.

The key to this dish is to slice the potatoes thinly so that they cook thoroughly and break down more quickly.  In addition, the green vegetable (most commonly kale, but could also be collard greens or cabbage) must be sliced very thin.  The easiest way to accomplish this is to roll up several kale leaves tightly like a cigar, then slice thinly crosswise.  You may include the tender portion of the stems, but discard the tougher lower portions.  Total cooking time is gauged to ensure that the stem portions are completely cooked and tender. 

Finally, olive oil is a major taste ingredient so a fruity, delicious extra virgin variety is highly desirable.

When served, it is customary to dip thick slices of fresh, whole grain bread into the soup, leaving the remaining broth a scrumptious, thick mixture of kale, olive oil, and potatoes. 

This is a very satisfying dish that can serve as a hearty appetizer or an entire meal.  It is traditionally accompanied by a robust red wine.

2 ½ lbs. potatoes (3-4 medium), peeled and sliced thin

1 cup extra virgin olive oil

6 cups water

4 cloves garlic, coarsely chopped

1 tsp. fresh chopped rosemary

¼ tsp. hot red pepper flakes

freshly ground black pepper

salt to taste

1 lb. (one bunch) of kale, washed and sliced thin, tough stems discarded

Put potato slices, oil, and water into a large soup pot, bring to boil. Stir to avoid sticking. Reduce heat to low boil, add garlic, rosemary, red pepper, black pepper, and salt. Cook, stirring frequently with a wire whisk to break up potatoes, about 30-45 minutes. Liquid will become thick as potatoes dissolve.

Prepare kale. Wash and drain. Stack several leaves at a time, rolling into a tight “cigar”, then slice thinly crosswise to where stems become tough. Discard tough stems. Place kale into soup, stir, cover, and continue cooking until stem portions are tender.

Serve with fresh green salad, hard crust bread, and a robust, dry red wine.  Enjoy!