Soft Pretzel Batch Calculator
Calculate dough ingredients and lye bath ratios for a batch of soft pretzels by count and size.
Soft pretzels use an enriched lean dough (flour, water, yeast, butter, sugar, salt) that gets its distinctive flavor and dark mahogany crust from a brief dip in an alkaline bath before baking.
Dough Weight Per Pretzel
The total dough weight depends on the pretzel size:
| Size | Dough Weight | Finished Weight | Diameter |
|---|---|---|---|
| Snack / Mini | 50–60 g | 40–50 g | 8 cm (3 in) |
| Standard | 100–120 g | 85–100 g | 12–14 cm (5–6 in) |
| Large / Mall-style | 150–180 g | 130–155 g | 18–20 cm (7–8 in) |
| Pretzel sticks (each) | 40–50 g | 35–42 g | 15 cm long |
Pretzels lose about 15–18% of their weight during baking due to moisture evaporation.
Standard Soft Pretzel Dough Formula (Baker’s Percentages)
Baker’s percentages express every ingredient as a percentage of the flour weight:
| Ingredient | Baker’s % | For 500g Flour |
|---|---|---|
| Bread flour | 100% | 500 g |
| Warm water | 64% | 320 g (ml) |
| Instant yeast | 1.4% | 7 g (1 packet) |
| Unsalted butter (melted) | 4% | 20 g |
| Brown sugar | 3% | 15 g |
| Fine salt | 2% | 10 g |
Total dough yield from 500g flour: approximately 872g. This makes roughly 7–8 standard pretzels (110g each).
Alkaline Bath — The Secret to Real Pretzels
The alkaline bath creates the Maillard reaction on the surface that gives pretzels their deep brown color and characteristic chewy skin.
Food-grade lye (sodium hydroxide) bath: Ratio: 30–40 g NaOH per 1 liter of water (3–4% solution). Dip time: 20–30 seconds. This is the traditional German bakery method and produces the most authentic flavor and color.
Baking soda bath (safer alternative): Ratio: 60–70 g baking soda per 1 liter of water. Some recipes bake the baking soda first (at 150°C for 1 hour) to convert it to sodium carbonate, which is more alkaline and closer to the lye result. Dip time: 30–60 seconds.
| Bath Type | Concentration | Color Result | Flavor Result |
|---|---|---|---|
| Food-grade lye | 3–4% NaOH | Deep mahogany | Authentic pretzel, slightly bitter skin |
| Baked baking soda | 6–7% Na2CO3 | Medium brown | Close to authentic |
| Plain baking soda | 6–7% NaHCO3 | Light brown | Milder, less pretzel-like |
| No bath (egg wash) | N/A | Golden | Not a pretzel — just a bread roll |
Worked Example — 12 Standard Pretzels
Dough per pretzel: 110g. Total dough: 12 x 110 = 1,320g. Flour needed: 1,320 / 1.744 = 757g (1.744 = sum of baker’s percentages / 100). Rounded: 760g flour.
Full recipe:
- Flour: 760g
- Water: 486g (64%)
- Yeast: 10.6g (round to 11g, about 1.5 packets)
- Butter: 30g
- Brown sugar: 23g
- Salt: 15g
Lye bath (3.5%): 35g food-grade lye per 1 liter of water. You need enough liquid to dip pretzels — typically 3–4 liters for a batch of 12. Lye needed: 3.5 x 35 = ~123g of food-grade NaOH in 3.5 liters of cold water.
Baking Temperature and Time
- Standard: 220°C (425°F) for 12–14 minutes
- Mini/snack: 220°C for 8–10 minutes
- Large: 210°C (410°F) for 15–18 minutes
Brush with melted butter immediately after removing from the oven. Sprinkle with coarse salt (pretzel salt or flake salt) before baking while the surface is still wet from the lye dip.