How to Make (a lot of) Sumac Juice

AKA sumac lemonade, sumacade, Rhus juice, Quallah

Are you like me and hate long-winded preludes to online recipes? Do you wish they’d stop blathering on about how their grandmother used to make this dish on Sunday mornings when the moon was in Virgo and the meadowlarks were fledging? Let’s cut to the chase; here’s how we at Ferme et Forêt make hundreds of litres of sumac juice each year (other online r…