Bread Soup

Bread soup is frugal Swedish cooking at its most resourceful. Stale bread gets sliced thin, browned in butter with chopped onions, dusted with flour, then simmered in stock and strained into a smooth, velvety broth. Nothing wasted, everything transformed.

The browning step is where the flavor lives. Getting the bread and onions golden in butter before adding liquid creates a toasted, nutty base that plain boiled bread could never deliver. That color is caramelized starch and Maillard reaction at work, and it’s what separates a rich soup from something that just tastes like wet bread.

Straining through a sieve removes any texture and gives you a completely smooth result. Push the solids through with the back of a spoon to extract every bit of flavor. What comes out is silky and surprisingly rich for something made from such humble ingredients.

Nutmeg is the traditional seasoning, and just a grating of it lifts the whole bowl. Serve it hot with a generous handful of grated cheese on top so it melts into the broth as you eat.

Chef Tips

• Use day-old or stale bread. Fresh bread absorbs less flavor during browning and can turn gummy
• Dark rye or whole grain bread gives a deeper, more complex flavor than white bread
• Don’t rush the browning. Medium heat for a solid golden color builds the foundation of the soup
• A sturdy stock (beef or chicken) makes a bigger difference here than in most soups since the ingredients are so simple

Variations

• Stir in a spoonful of cream after straining for a richer, silkier finish
• Add a clove of garlic to the browning step for extra depth
• Float a poached egg on each bowl for a heartier meal