Hernekeitto(Finnish Split-Pea Soup)

Hernekeitto is so deeply embedded in Finnish culinary tradition that it has its own day: every Thursday across Finland, schools, military canteens, and homes serve this hearty yellow split pea soup. The tradition dates back centuries to Lutheran fasting Fridays, when households cooked a fortifying soup the day before so they could focus on lighter meals.

What distinguishes hernekeitto from American split pea soup is the spicing. Five whole allspice berries tied in cheesecloth simmer with the soup, infusing the broth with warm clove-cinnamon-pepper notes that are utterly Nordic. The cheesecloth bag is removed before serving so you don’t bite down on a peppercorn.

Smoked pork hocks are the traditional protein, slowly simmering for an hour to release their gelatin and smoky depth into the broth. The recipe offers cubed cooked ham as a quicker alternative, but if you can find smoked hocks, use them. They make this soup what it should be.

The potatoes, carrots, and onion go in late (after the peas have already cooked for an hour) so they retain some texture instead of disintegrating. This staggered cooking is what gives proper hernekeitto its rustic chunky character with creamy pea broth.

Serve with a swirl of sharp Dijon mustard stirred in at the table. This is non-negotiable in Finland.

Pro Tips

• Use yellow split peas if possible; green works but yellow is the authentic Finnish choice and has a milder, sweeter flavor.
• Don’t soak the split peas; unlike whole dried peas, split peas cook fully in 1½ hours without pre-soaking.
• If using ham hocks, remove the meat from the bones at the end and shred it back into the soup for better distribution.
• Pull the allspice bag before serving; missing it and biting an allspice berry is a unforgettable mouth experience.

Variations

• Add 1-2 tablespoons of Dijon mustard directly to the soup at the end for a bolder flavor base.
• Stir in a splash of cream just before serving for a richer, slightly less rustic finish.
• Sub vegetable stock and skip the meat for a vegetarian version; add 1 teaspoon smoked paprika to mimic the smoky depth.