Field Cast Iron is not your run of the mill cast iron cookware - or at least it isn’t in 2021.
There was a time, way back when, that cast iron cookware was made in small batches and hand finished. Every detail of each pan was examined and the cookware was intended to to be a staple in the kitchen.
Times changed, and other types of cookware were introduced. Some of these adaptations were good, like stainless steel and aluminum clad cookware, but some were not so good, like the introduction of Teflon coating for cookware. The ease and cheapness of Teflon coated cookware made it a huge hit in the modern home. So much so that by the 1980’s no one bought cast iron cookware other than cowboys and campers.
Fortunately people have come to realise that coated cookware is what it is: garbage. The only cookware that will last forever is cast iron, carbon steel, and heavy weight stainless steel.