Always be very careful that your Greens be nicely pick’d and wast’d. You should lay them in a clean Pan for fear of Sand or Dust, which is apt to hang round wooden Vessels. Boil all your Greens in a Copper Sauce-pan by themselves with a great Quantity of Water. Boil no Meat with them, for that discolours them. Use no Iron Pans, &c. for they are not proper; but let them be Copper, Brass or Silver.