I kept staring at that patch of chard in the garden. It’s wild San Francisco chard, grown from starters from Logan’s Gardens, which sells at the Santa Monica and Hollywood farmers markets. The leaves are so tender I’d been eating them simply sauteed in a little olive oil with a smashed garlic clove and, at the end, a squeeze of lemon.

But last weekend, thumbing through the charming little cookbook “Zuppe: Soups From the Kitchen of the American Academy in Rome” by Mona Talbott, I found a recipe for potato and wild chard soup. It reminded me of soups I’d fortified myself with in Rome many winters ago.

Cooking from the garden, even between seasons, has its pleasures even if the palette of ingredients is more limited. I love those dishes focused on just one or two flavors.

I remember arriving at my friend Chiara’s house near Campo dei Fiori, bundled in a thrift-store Harris tweed coat. As I unwound my muffler on that chill, windy day, Chiara set out two soup bowls. Each had a thick slab of grilled bread at the bottom. Then she broke an egg into each bowl and ladled over a steaming lentil soup, finishing the whole thing off with a quick swirl of green-gold olive oil.

At that moment, the soup was heaven. Each bite was a little different, filling and delicious. The lentils were small and stone-colored, the famous lentils of Castelluccio in Umbria grown at 4,500 feet above sea level. Sometimes Chiara cut coins of wild boar sausage into the zuppa, sometimes not.

We had cheese and bread after, sometimes fruit. But I always left her house feeling happy and nourished.

In her recipe, Talbott, who is a Chez Panisse alum and was founding executive chef of the Rome Sustainable Food Project at the American Academy in Rome, suggests serving the soup over a slice of toasted bread or with a poached egg.

The ingredients couldn’t be plainer: just diced potato, chard stems and leaves, salt and pepper, and a minced garlic clove. No stock. No pancetta. No bay leaf. Just cold water.

I decided to make it. As the potatoes and chopped chard stems simmered in water with a little salt, I kept dipping my spoon in, to taste, and with dinner guests about to arrive, frankly, I was worried. The “broth” tasted very like salted water.

In the end, though, after I added masses of chard leaves and garnished the soup with a thread of peppery new olive oil and a grating of Parmesan, each spoonful tasted bright and true — straight from the garden.

Potato and Wild Chard Soup

1 1/2 pounds boiling potatoes

1 large bunch chard (about 11/2 pounds)

Salt

1 large clove garlic

1/4 cup olive oil

Freshly ground black pepper

New-season extra-virgin olive oil, for garnish

Parmesan, for garnish

Peel and cut the potatoes into small dice. You should have about 4 cups. Wash the chard in several changes of cold water, drain and then strip the leaves from the stems. Reserve and dice the chard stems. You should have about 11/2 cups.

Bring 4 quarts of salted water to a boil. Cook chard leaves in boiling water until tender, about 3 to 4 minutes. Drain, and spread them out to cool. With your hands, squeeze out the excess water. Rough-chop the chard leaves.

Peel and finely chop the garlic. Sweat the chard stems in olive oil over medium heat in a 6-quart stockpot. After 2 minutes, add the garlic and pinch of salt; continue sweating for 5 minutes.

Add the potatoes and 2 quarts of cold water to the chard stems. Bring the soup to a boil, then reduce to a simmer and continue cooking until the potatoes are very tender, about 15 minutes. Add the chopped chard leaves and simmer 2 to 4 more minutes. Season to taste with salt and pepper (we added 2 teaspoons of salt and 1 teaspoon of pepper). This makes about 3 quarts soup. Serves: 6 to 8

Serve with a drizzle of new-season, cold-pressed olive oil and freshly grated Parmesan.

Note: Adapted from “Zuppe: Soups From the Kitchen of the American Academy in Rome” by Mona Talbott. Talbott suggests serving the soup over a slice of toasted bread or with a poached egg.