Shallot Soup

This shallot soup strips everything back to the essentials: two and a half pounds of finely chopped shallots simmered in water with watercress, salt, and pepper. That’s it. No stock, no cream, no butter. The shallots themselves create the broth, releasing their natural sweetness and a depth of flavor over 45 minutes of gentle simmering that you wouldn’t expect from something this simple.

Shallots behave differently from regular onions when simmered long. They break down almost completely and turn silky, with a mellow, slightly sweet flavor that’s more refined than yellow onion soup. The watercress adds a peppery, slightly bitter edge that keeps all that sweetness in check.

This is a soup that depends entirely on the quality of your shallots. Look for firm, heavy ones with dry papery skins and no green sprouts. Sprouting shallots taste bitter.

Pro Tips

• Chop the shallots as finely as you can. Smaller pieces dissolve more fully into the broth.
• Simmer gently, don’t boil. A hard boil breaks down the watercress too much and makes the soup murky.
• Blend half the soup and stir it back in for a creamier texture without adding any dairy.
• Taste for salt at the end. Without stock, the soup relies entirely on the salt you add.

Variations

• Swirl in a tablespoon of cream or a drizzle of good olive oil when serving for richness.
• Add a splash of dry white wine in the last 10 minutes for acidity.
• Float a slice of toasted baguette with melted Gruyere on top for a French onion soup treatment.