Most people keep tomato puree in cans because it stays fresh longer. Stored this way, exposure to light, oxygen, or dampness hardly affects it. Protection like this guards against outside contaminants, too. Flavor holds up well for months, sometimes years. The color rarely fades if kept sealed. Texture changes very little during storage. Once opened, conditions shift completely. Safety depends on proper handling after breaking the seal. Freshness lasts only under the right circumstances afterward.
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