Serves 4
1 tablespoon pure olive oil
1 tablespoon unsalted butter
2 medium leeks, trimmed, white and tender green parts thinly sliced,
rinsed well water and drained
1 celery stalk with leaves, cut into thin slices
3 garlic cloves, minced
1 small russet potato, peeled and small diced
1/4 teaspoon cayenne pepper
1/4 teaspoon ground nutmeg (freshly ground is best, using a zester)
2 (12 1/2-ounce) cans artichoke hearts, drained well and coarsely chopped
4 cups low-sodium chicken or vegetable stock
2 teaspoons fresh lemon juice
Salt and freshly ground pepper to taste
1/2 cup heavy cream
1 tablespoon chopped chives or parsley for garnish