| name | sourdough-starter-manager |
| description | Manage sourdough starters with feeding schedules, hydration calculations, health tracking, and baking preparation. Use when the user wants to maintain a sourdough starter, plan feedings, calculate ratios, troubleshoot starter problems, or prepare for baking. |
| metadata | {"openclaw":{"emoji":"🍞","version":"1.0.0","author":"AM","tags":["baking","sourdough","cooking","food","fermentation"],"requires":{"bins":[],"env":[],"config":[]}}} |
Sourdough Starter Manager
Description
The Sourdough Starter Manager helps bakers maintain healthy, active sourdough starters through intelligent feeding schedules, precise hydration calculations, health monitoring, and baking preparation planning. Whether you're a beginner or experienced baker, this skill ensures your starter stays healthy and ready for any baking project.
Core Capabilities
1. Feeding Schedule Management
- Calculate feeding ratios (starter:flour:water)
- Generate maintenance schedules (daily, weekly, refrigerated)
- Create pre-bake preparation timelines
- Track feeding history and patterns
- Set reminders for upcoming feedings
2. Hydration Calculations
- Calculate current starter hydration percentage
- Convert between different hydration levels (e.g., 100% to 75%)
- Adjust recipes for different starter hydrations
- Calculate flour and water needed for target amounts
3. Health Monitoring & Troubleshooting
- Diagnose common starter problems
- Track rise times and peak activity
- Monitor smell, consistency, and appearance
- Provide recovery protocols for neglected starters
- Identify contamination vs. normal fermentation
4. Baking Preparation
- Calculate starter amounts needed for recipes
- Generate feeding schedules to reach target amounts
- Plan multi-day preparation timelines
- Adjust for room temperature variations
- Optimize timing for specific bake schedules
Usage Examples
Example 1: Daily Maintenance Feeding
User: "I need to feed my starter. I have 50g of starter right now."
Assistant Response:
- Suggests 1:1:1 ratio feeding (50g starter : 50g flour : 50g water)
- Notes this will yield 150g total
- Recommends discarding excess if not baking soon
- Provides timeline: feed now, ready in 4-8 hours at room temp (68-75°F)
Example 2: Pre-Bake Preparation
User: "I want to bake bread on Saturday morning. My recipe needs 200g of active starter."
Assistant Response:
- Calculates backward timeline from Saturday morning
- Suggests feeding schedule: Thursday night and Friday evening
- Provides specific amounts to feed at each stage
- Warns about room temperature considerations
- Offers contingency plan if starter doesn't rise as expected
Example 3: Hydration Conversion
User: "My starter is at 100% hydration but the recipe calls for 75% hydration. How do I convert?"
Assistant Response:
- Explains hydration percentage concept
- Calculates flour/water adjustments needed
- Provides step-by-step conversion process
- Suggests how to maintain a 75% starter vs. one-time conversion
- Notes texture and consistency differences
Example 4: Troubleshooting
User: "My starter smells like nail polish remover and hasn't risen in days."
Assistant Response:
- Identifies likely cause: hooch formation and starvation
- Diagnoses: needs more frequent feeding
- Provides recovery protocol:
- Pour off liquid (hooch)
- Discard 75% of starter
- Feed with 1:2:2 ratio (more food to revive it)
- Feed every 12 hours for 3-4 days
- Monitor for sweet-sour smell and doubling
- Sets realistic recovery timeline
- Explains when to discard and start fresh
Example 5: Long-Term Storage
User: "I'm going on vacation for 2 weeks. How do I store my starter?"
Assistant Response:
- Recommends refrigeration method
- Feeding protocol before storage: 1:5:5 ratio (well-fed)
- Storage instructions: airtight container with room to expand
- Revival instructions for return
- Alternative: dehydration method for longer storage
- Notes on starter resilience (can survive months in fridge)
Key Formulas & Calculations
Hydration Percentage
Hydration % = (Water Weight / Flour Weight) × 100
Example:
50g flour + 50g water = 100% hydration
50g flour + 37.5g water = 75% hydration
Feeding Ratio Notation
1:1:1 = 1 part starter : 1 part flour : 1 part water
1:2:2 = 1 part starter : 2 parts flour : 2 parts water
Example with 50g starter:
1:2:2 = 50g starter + 100g flour + 100g water = 250g total
Target Amount Calculation
To get X grams of starter at ratio R:S:F:W
If ratio is 1:2:2 and you need 200g:
- Total parts = 1+2+2 = 5
- Starter needed = 200/5 × 1 = 40g
- Flour needed = 200/5 × 2 = 80g
- Water needed = 200/5 × 2 = 80g
Troubleshooting Guide
Common Issues
Not Rising / Slow Activity
- Likely causes: Too cold, needs more frequent feeding, weak starter
- Solutions: Move to warmer spot (75-80°F), increase feeding frequency, try 1:2:2 ratio
Liquid on Top (Hooch)
- Cause: Starter is hungry and has consumed available food
- Solution: Stir back in or pour off, then feed immediately
Mold Growth
- Identification: Fuzzy colored spots (green, pink, orange)
- Action: Discard entire starter, sanitize container, start fresh
- Prevention: Regular feeding, clean utensils, proper ratios
Acetone/Nail Polish Smell
- Cause: Starvation and alcohol production
- Solution: Feed more frequently with higher flour ratios
No Bubbles After Several Days
- Possible causes: Chlorinated water, non-organic flour, too cold
- Solutions: Use filtered water, try organic flour, increase temperature
Health Indicators
Healthy Starter Signs:
- Doubles in size within 4-8 hours of feeding
- Pleasant sweet-sour smell
- Bubbles throughout
- Passes float test (drop in water and it floats)
- Elastic, stretchy consistency
Unhealthy Starter Signs:
- No rise after 12+ hours
- Offensive smell (not just sour)
- No bubbles
- Watery consistency that doesn't improve
- Colored spots or mold
Storage Methods
Refrigeration (Best for 1-4 week breaks)
- Feed with 1:5:5 ratio
- Let rise to peak (4-8 hours)
- Seal in container with room to expand
- Refrigerate
- Can last months with occasional feeding (every 2-4 weeks)
Dehydration (Best for long-term storage)
- Feed starter and wait until peak rise
- Spread thin layer on parchment paper
- Air dry completely (2-3 days) or use dehydrator
- Break into flakes and store in airtight container
- Rehydrate with equal parts flour and water
Freezing (Not recommended)
- Can damage yeast and bacterial cultures
- May not revive successfully
Temperature Guidelines
| Temperature | Activity Level | Feeding Frequency |
|---|
| 65-70°F | Slow | Every 24 hours |
| 70-75°F | Moderate | Every 12-24 hours |
| 75-80°F | Active | Every 8-12 hours |
| 80-85°F | Very Active | Every 6-8 hours |
| 85°F+ | Too Hot | Risk of bad bacteria |
Baking Preparation Timeline
Same-Day Bake (8-12 hours notice)
- Take refrigerated starter out
- Feed 1:2:2 ratio
- Use when doubled (4-8 hours depending on temp)
Next-Day Bake
- Evening before: Feed refrigerated starter 1:1:1
- Morning of bake: Starter should be at peak, ready to use
Weekend Bake Planning
- Thursday evening: Remove from fridge, feed 1:2:2
- Friday morning: Discard all but 50g, feed 1:2:2
- Friday evening: Check rise, feed 1:1:1 (or according to recipe needs)
- Saturday morning: Use at peak rise
Best Practices
- Consistency is Key: Try to feed at similar times each day
- Ratios Matter: Adjust feeding ratios based on schedule and temperature
- Trust Your Senses: Smell and appearance tell you more than the clock
- Keep Records: Track feedings and outcomes for better understanding
- Don't Stress: Sourdough starters are resilient and forgiving
- The Float Test: Not perfect but helpful - drop starter in water, it should float when ready
- Room Temperature: Affects everything - adjust expectations accordingly
- Discard Uses: Don't waste - use in pancakes, crackers, pizza dough
Recipe Adjustments
When a recipe calls for different starter than you maintain:
Your starter is 100% hydration, recipe calls for stiff (50-60%):
- Reduce water in recipe by 10-20%
- Or convert portion of your starter temporarily
Your starter is 100%, recipe calls for liquid (125%):
- Add extra water to recipe
- Or adjust your starter for one feeding
Advanced Tips
- Peak vs. Past Peak: Use at peak for maximum rise, past peak for more sour flavor
- Flour Types: Whole wheat and rye ferment faster than white flour
- Water Quality: Chlorinated water can inhibit growth - use filtered if possible
- Seasonal Variations: May need more frequent feeding in summer, less in winter
- Whole Grain Boost: Add 10-20% whole wheat/rye to feeding for more activity
- Starter Names: Many bakers name their starters - it's tradition!
When to Use This Skill
Use the Sourdough Starter Manager when users:
- Ask about feeding their sourdough starter
- Need help calculating hydration or ratios
- Want to prepare starter for baking
- Have questions about starter health or troubleshooting
- Need storage advice for vacations or breaks
- Want to convert between different starter hydrations
- Ask about timelines for baking preparation
- Need help reviving a neglected or weak starter
- Want to understand fermentation schedules
- Ask about temperature effects on starter activity
Important Notes
- Every starter is unique and may behave slightly differently
- Trust your senses (smell, sight, texture) over rigid timing
- Room temperature significantly affects all timelines
- When in doubt, feed your starter - it's hard to overfeed
- Starters can survive weeks of neglect in the refrigerator
- Start fresh if you see mold (colored fuzzy spots) - don't risk it
Remember: Sourdough baking is an art and a science. These guidelines are starting points - adjust based on your environment, schedule, and starter's unique personality!
