system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is white rice cheaper than red, brown or black rice even if the other varients require less milling?
gpt
White rice is much easier to store and transport, as without the bran (outer layer) it lasts several times longer at room temperature. Whole rice (brown etc.) can go rancid in a few months on the shelf.