From north west Spain (pot cofee) just using a pot, is a method that allows you to make coffee for an unlimited amount of people depending on the size of the pot: https://youtu.be/hG0aLE6nEfY I think you must trust autogenerated subtitles.

If I know I’m hosting a larger crowd than one or two friends, my go-to is a large batch of cold brew. This allows me to serve both hot and iced coffee depending on my guests’ preference. I aim for 100g of concentrate per guest and top it with 100g of hot water or a mix of ice and cold water.

First video I didn’t watch through in a long time. Felt rather uninspired.