Surprisingly long life shows up when tomato paste hides in metal containers. Sunlight tries to break down flavor, yet the sturdy shell blocks its reach. Oxygen floats nearby but cannot slip through that tight seal. Damp air pushes close, only to meet unyielding walls. Thick texture sits untouched week after week. Rich taste refuses to fade even months later. Freshness lingers simply because metal won’t let go.
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