Great article @Delph-in-holland, and thank you for the recipe.

How long can one keep the powder once it is prepared?

An option to reduce costs and make this solution economically attractive could be to scale up the quantity, and maybe group yourself with people to buy the raw materials. Do you think this is a viable option?

I wish more people were conscious of how taking small steps like this, at the individual level, can actually reduce the pressure on Nature's self-healing capacity...