What is the best way to store animal products? (Meat, organs, milk, etc)

[01]

What is the best way to store animal products? (Meat, organs, milk, etc) - Especially for long term.
Should you refrigerate (not freezing) them?

Also lets say you're going vacation for a long while <2 weeks, how could you store meat/animal products at home without them fermenting?

[88]

Refrigerate in jars

[legendarykennen]

If its below 2 weeks then why would you mind them being fermented in jars