Making something that needs heat. Something edible or drinkable? Maybe fermenting something.
Yes, definately edible, because it has additives.
Or is it a paint factory?
I guess I must have been hungry the night I viewed this series. I couldn't think of anything but food (eventhough this doesn't look very appetising). But soap? OK.....I love soap, especially smelling like lillies, jasmine, orchids or roses.