Summary
Freshness is a setup, not luck.
- Keep it airtight, cold, and dark — oxygen, heat, light, and moisture are what dull it.
- Finish an opened tin in 2–4 weeks; keep your sealed reserve cold until you need it.
- Work from one small opaque tin at the station — dry scoop, lid closed, off the hot machine.
- Date every tin and pour oldest-first.