Description
A microbial propagation technique using previous fermentate to inoculate new batches.
Technical
Back-slopping introduces active microbial communities (LAB, yeasts, acetobacters) to fresh substrate, accelerating acid production and inhibiting pathogens via competitive exclusion. Dominant species establish stable succession patterns through quorum sensing and metabolic byproduct accumulation.
Culinary Significance
Ensures consistent flavor profiles and fermentation kinetics while reducing spoilage risk in products like sourdough, yogurt, and fermented vegetables.
Science
Primary Reaction
Lactic acid fermentation (C6H12O6 → 2C3H6O3)
Parameters
Temperature
25°C optimal
15°C to 37°C range
Time
24-48 hours
12 hours – 7 days
Equipment
Non-reactive vessels (glass/ceramic)Air lockspH meter