What actionable tip is suggested for maintaining the vigor of a continuous culture like yogurt over time?

Answer

Introducing a fresh, high-quality commercial source.

An actionable tip for maintaining continuous cultures is to periodically 'shock' the culture with a fresh, high-quality commercial source if sluggish activity is noticed, similar to adding new seeds to a garden.

What actionable tip is suggested for maintaining the vigor of a continuous culture like yogurt over time?
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