Pretty sure the reason the whole world is using vegetable oil for cooking is due to the price. It's significantly cheaper than tallow or lard. That's not a temporary disruption of the supply chain. It has been this way for decades.
A 10 ouncer of bacon makes more grease than I can ever use so between that and tallow/lard I'm never hurting for fat. Also chicken thighs push out a shit ton of pan drippings.
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