Mixed Vegetable Potage from Soup: A Way of Life by Barbara Kafka

Ingredients

• Freshly ground black pepper, to taste
• 3 tablespoons (45 g) unsalted butter
• 3 cloves garlic, smashed and peeled
• Kosher salt, to taste
• 10 cups (2.5 l) Basic Chicken Stock or commercial chicken broth
• 12 medium carrots, peeled and sliced
• 2 medium onions, cut into chunks
• 1¾ pounds (785 g) spinach, stemmed and washed well
• 2 pounds (900 g) mashing potatoes, peeled, halved lengthwise, and cut across into slices