Original Receipt in 'English Housewifry' by Elizabeth Moxon, 1764 (Moxon 1764)7. To make PEASE SOOP in Lent.
Take a quart of pease, put them into a pot with a gallon of water, two or three large onions, half a dozen anchovies, a little whole pepper and salt; boil all together whilst your soop is thick; strain it into a stew-pan through a cullender, and put six ounces of butter (work'd in flour) into the soop to thicken it; also put in a little boil'd sellery, stew'd spinage, crisp bread, and a little dry'd mint powdered; so serve it up.