A wholesome, deeply comforting soup crafted from slow-simmered stock, aromatic garden vegetables, and fresh herbs, served with crusty bread.
Whisk the yogurt, egg yolk, and flour until smooth.
Bring the stock to a gentle simmer in a pot.
Whisk a ladleful of hot stock into the yogurt, then pour it back into the pot, stirring constantly.
Add the spinach and cook over low heat for 8 minutes, stirring and never letting it boil.
Melt the butter, fry the garlic in it until golden, drizzle over the soup, and serve.