On my latest visit to Dublin, I tasted a delicious loaf of Irish treacle bread. Dark, heavy and deliciously earthy. However, it was of course a soda bread and when I returned home, I decided to make a sourdough version of the Irish black treacle bread. The black treacle bread recipe I developed uses cracked rye and rye flour to support the rich and aromatic flavours of the treacle.
Before I jump into the recipe, I wanted to share a few facts about treacle. I was astounded when, at a conference in Powerscourt Hotel in Co. Wicklow, someone mentioned that Dublin was built around the largest natural treacle lake – a fake fact which was quickly dispelled by a quick Wikipedia check on the matter.
What is black treacle?
- Uncrystallised dark syrup, a byproduct of sugar cane refining, obtained from later boilings in the process
- About 55% sucrose
- Also known as dark molasses
- Almost-black with an otherworldly, thick, viscous consistency (for any Star Trek fans here, it really reminds me of Armus in the episode “Skin of Evil”!)
Back to actual treacle… so why use treacle in baking?
- Black treacle is rich in vitamins, minerals and iron
- It adds a distinctively dark colour, intense and distinctive bitter-sweet burnt caramel flavour and moisture to baked dishes
- When baking with dried fruits, black treacle accentuates the fruit flavour and adds a deep, rich note
Black treacle bread recipe
Treacle bread ingredients
- 30g rye sourdough starter
- 150g chopped rye grains
- 130g water
Boiled rye grain soaker
- 150g chopped rye grains
- 120g boiling water
- 5g salt
- 500g wholemeal rye flour
- 35g black treacle
- 10g salt
- 350g water, warm
- Sunflower oil (for greasing the baking tin)
Baking equipment I used for this recipe
How to make black treacle bread
- Prepare the sourdough and boiled rye grain soaker by combining the ingredients in two separate bowls and mixing thoroughly. I use a silicone spatula to do this which works well.
- Cover the bowls with their respective lids and keep at room temperature for about 16 to 24 hours.
- On day 2, after the 16 to 24 hour wait, dissolve the black treacle in the warm water. Use a small bowl to do so.
- Combine 280g of the sourdough (the rest goes back into the fridge for your next bake) and all of the rye grain soaker with the treacle water and the remaining dough ingredients (except the sunflower oil).
- Work the dough for a few minutes. You won’t be able to knead it but mix well. Cover and rest for an hour or two.
- Give the dough another quick mix, then place in an oil-brushed baking tin (I use a dough scraper to help with this process). The dough should only fill about half the tin, giving it room to proof and rise to the top.
- Wrap a polythene bag around the loaf tin to prevent the dough from drying out.
- Proof for about 5 hours until almost doubled in size. Please note, the time required will depend on the room temperature. This process may happen more quickly if you live in warmer climes!
- Preheat the oven in time, then bake for 20 minutes at 240°C on the second lowest shelf, then at 200°C for another 50 minutes.
- Cool on a wire rack.