Similar, but with the filter paper, you get enough resistance that you’re basically boiling the coffee grounds.
I thought the method was get to put boiling water in the bottom, to aid the water quickly getting to boiling when on the hob, then massively reducing heat once the coffee comes through, to minimise the amount of time that the grounds have boiling water going through them/regulating it so that the brew temp isn’t so high that you’re dissolving loads of coffee, and making it bitter as fuck.
I think keeping it low to get to boil means that the coffee grounds are getting wet and heating up a lot before water passes through them, so you end up with a long brew time and boiling grounds, which makes for a very over extracted brew.
Similar, but with the filter paper, you get enough resistance that you’re basically boiling the coffee grounds.
I thought the method was get to put boiling water in the bottom, to aid the water quickly getting to boiling when on the hob, then massively reducing heat once the coffee comes through, to minimise the amount of time that the grounds have boiling water going through them/regulating it so that the brew temp isn’t so high that you’re dissolving loads of coffee, and making it bitter as fuck.