Evie: Well, you're not that far off, honestly. You're a couple steps to the left of what was actually used. Henry Kirk tried to emulate the feeling of ice using a mixture of materials and included in this mixture were salt, copper, aluminium and... hog's lard. Literal hog's lard - the fat from a hog - to make it slippery enough to skate on!
Niamh: Who's sitting in their kitchen one night thinking, "Oh, I know what I'll do, I'll make some fake ice using hog's lard!"
Evie: Obviously Henry Kirk thought that. So here's your ingredients: "30-50 feral hogs --" (hosts laugh)