Rustic Finnish rye bread (Sourdough Ruisleipä)

Finnish rye bread is a school of patience. Rye, unlike wheat, does not rely on the gluten network (gluten) but on pentosans (mucilage) and starch. That is why sour leavening is needed: the acidic environment prevents the inside of the dough from becoming runny during baking. The result is a dense, dark, characterful bread that keeps for weeks and whose flavour matures day by day.
🕒 Prep Time 45 mins
🍳 Cook Time 50 mins
Total Time 15 hrs
🍽️ Servings 8 servings
🔥 Calories 260 kcal
🌍 Cuisine Finnish

Ingredients

Equipment Needed

  • Large mixing bowl (preferably glass or plastic)
  • Wooden spoon
  • Proving basket or bowl lined with a tea towel
  • Baking paper
  • Wire rack for cooling

Allergen Information

⚠️ Cereals containing gluten

Instructions

1

Mix the sourdough starter into the lukewarm water, then add the rye flour. Mix with a wooden spoon until you get a thick, sticky mass.

Tip: No need to knead like wheat bread! Rye doesn't need gluten network strengthening (mechanical working is unnecessary).
2

Cover and leave to ferment on the counter for 8-10 hours (or overnight).

Tip: This is the pre-dough phase, where the sourdough bacteria produce acid, which flavours and preserves.
3

The next day, add the salt and knead thoroughly in the bowl. Turn out onto a floured surface and shape into a loaf with wet hands.

Tip: Water is your friend: the dough won't stick to wet hands.
4

Place in a proving basket and prove in a warm place for 2-3 hours until the surface visibly cracks.

Tip: The cracks indicate that the dough structure is beginning to fill with gases.
5

Bake in an oven preheated to 250°C for 15 minutes, then turn down to 200°C and bake for a further 35-40 minutes.

Tip: The hot start (heat shock) lifts the dough before the crust sets.
6

Cool completely on a wire rack. Cutting while warm is strictly forbidden!

Tip: The inside of rye bread solidifies while cooling (chemical stabilisation). If you cut it warm, the crumb will be sticky.

Recipe FAQ

Why is the dough so sticky?
That's the nature of rye. Pentosans bind a lot of water. Don't add too much flour, work with wet hands instead!
Why didn't it rise?
Rye sourdough is slower than yeast. The room might have been cool, or your starter wasn't active enough. Give it time!

Ingredients

  • 700 g Wholegrain rye flour
  • 500 ml Lukewarm water
  • 150 g Active rye sourdough starter (freshly fed)
  • 2 tsp Salt