Prepare the Garlic
Peel the garlic cloves using the blanching or knife-crushing method. Optionally, roast half of the garlic cloves at 375°F for 15-20 minutes.
Sauté Aromatics
Heat olive oil in a large pot over medium heat. Add garlic and onions, sautéing until garlic is golden and onions are translucent.
Deglaze the Pot
Pour in a splash of white wine or broth, scraping up any browned bits.
Simmer the Broth
Add chicken or vegetable broth, thyme, and bay leaf. Bring to a boil, reduce heat, and let simmer for 30-40 minutes.
Blend or Leave Chunky
Blend the soup for a smooth texture or leave it rustic with chunks of garlic and onion.
Add Egg Yolks
Whisk egg yolks with a splash of warm broth to temper. Slowly add the yolks to the soup while stirring continuously.
Prepare Bread Garnish
Toast French bread slices brushed with olive oil and sprinkled with herbs.
Assemble and Serve
Place a toasted bread slice in each bowl. Ladle the soup over the bread. Optionally, sprinkle with Parmesan cheese and fresh parsley.