Hamanatto Bolognese — Japan's "Anchovy" of Umami

A plate of spaghetti bolognese made with hamanatto, centered on a white plate with parsley garnish

There's a small jar in old Japanese kitchens that works just like anchovy or bottarga: chopped fine and melted into warm oil, it turns an ordinary sauce deep, dark, and savory. It's hamanatto — soybeans soaked in salt water and fermented for about half a year in Toyohashi, made the same patient way since 1884. No fish, no anchovy — just soybeans, salt, and time. Here it does quiet, delicious work in a weeknight bolognese the whole family will finish.

Serves 2 · about 25 minutes

Ingredients

  • 200 g spaghetti (plus 2 tsp salt for the pasta water)
  • 2 Tbsp hamanatto, finely chopped
  • 1 clove garlic, minced
  • 3 Tbsp olive oil
  • 200 g ground beef & pork (or all beef)
  • 1/2 onion, finely chopped
  • 1/2 can (about 200 g) whole peeled tomatoes
  • 1 large fresh tomato, chopped
  • 1 tsp salt (to taste)
  • black pepper
  • Optional: 1 bay leaf, a splash of soy sauce, a few basil leaves (chopped), grated cheese and chopped parsley to finish — and about 2 tsp extra hamanatto, finely chopped, for topping

Prepped ingredients for hamanatto bolognese: ground meat, finely chopped hamanatto, bay leaves, onion, garlic, and tomatoes

How to make it

  1. Bring a large pot of salted water to a boil; cook the spaghetti to package time.
  2. In a wide pan, warm the olive oil and gently cook the garlic and chopped hamanatto until fragrant. This is the anchovy moment — the hamanatto melts into the oil and perfumes everything.
  3. Add the ground meat and onion; cook until the meat is just done. Add the canned tomatoes, 1 tsp salt, and the bay leaf if using, and simmer about 10 minutes.
  4. Stir in the fresh tomato and basil if using, return to a simmer, taste, and adjust salt. A small splash of soy sauce here rounds things out, if you like. Finish with black pepper.
  5. Toss with the drained pasta, loosening with a splash of pasta water.
  6. Just before serving, sprinkle the extra hamanatto over the top, along with grated cheese and parsley if using.

Spaghetti tossed evenly with hamanatto bolognese sauce in a pan

Cook's note: Hamanatto is salty and full of umami, so go easy on added salt and taste as you go. Its presence isn't loud — you won't taste it sitting on the surface. It works from underneath, the way a good stock does: no trace of miso, just a quiet weight of umami holding the sauce together.

From our Pantry

Hamanatto from Toyohashi

Hamanatto from Toyohashi

Soybeans fermented in salt water for about half a year — the anchovy of Japanese pantries, made in Toyohashi since 1884.

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