For the soup base
01 -
3 tablespoons unsalted butter
02 -
5 cups (500 g) chopped celery, leaves reserved for garnish
03 -
1 medium yellow onion, diced
04 -
2 cloves garlic, minced
05 -
1 teaspoon kosher salt, plus more to taste
06 -
1/2 teaspoon black pepper
07 -
1/2 teaspoon dried thyme
08 -
3 tablespoons all-purpose flour
09 -
3 cups (720 ml) vegetable broth
10 -
1 bay leaf
For finishing
11 -
1 cup (240 ml) whole milk
12 -
1/2 cup (120 ml) heavy cream
13 -
1 tablespoon chopped chives or parsley, optional
14 -
Homemade croutons, optional