Terrior is a term referring to a broad spectrum of environmental factors.
"Terroir describes the environmental factors that affect a crop's phenotype, including unique environment contexts, farming practices and a crop's specific growth habitat."
www.wineinvestment.com
There have been many comments about how a plant can't tell the difference, or care what form the nutrients it receives come in. This is assuming that the plant is only consuming the nitrogen, phosphorus, and or potassium from the fertilizer(s) that we give the plant, which is a big assumption. We as growers focus on NPK because they are the primary nutrients, but when we feed a plant anything there are other things that are being absorbed by the plant, especially when comparing an organic fertilizer with a chemical based one. Everything that we do, every input has an effect on the character of the plant. No two plants grown using different fertilizers, whether they be chemical or organic in origin, even if they have the same NPK, will produce an identical end "product". I use the term "product" broadly to describe the end result of your and the plant's efforts. Not a "product" in the retail sense.
There are so many other factors involved when we feed a plant. I don't know if there are any chemical fertilizers that are 100% nitrogen, phosphorus, or potassium, with no carriers fillers, or emulsifiers, but there definitely aren't any organic fertilizers like that. There are always other things(other than NPK) that are in every input, these things are consumed by the plant and also affect the character of a plant(Terroir). Whether a plant can tell the difference between different sources of NPK is somewhat irrelevant when you factor in the fact that NPK are not the only things that a plant absorbs when we feed them, particularly in regard to organic inputs.
"You can affect the mineral content of soils organically or synthetically? so not sure what that has to do with it?"
Absolutely, the concept of terroir is not exclusive to organic or chemical growing methods, but what are the chances that through using two different fertilizers one organic, and one chemical, you would end up with the same exact mineral or micronutrient content? It seems unlikely that through using any two different fertilizers you could ever end up with the same exact content in the exact same quantities being absorbed at the same rates, period, but especially if one plant was being fed organic fertilizers and the other synthetic/chemical.
I suppose if you were growing two plants hydroponically in the same room using two different chemical fertilizers that were both 100% pure, with no fillers, carriers, or emulsifiers, and the same exact micronutrient product, that you could create two buds that were indistinguishable. But then again are two different chemical fertilizers with the exact same nutrient content actually two different fertilizers or just the same chemical with different labels on them?
The whole "a plant can't tell the difference is somewhat moot when you factor in that it's really never only the NPK in a fertilizer that a plant is consumes, plants don't only select those three nutrients out of a fertilizer and leave the rest. Especially if you get into things like Biodynamic, No-till, veganetic, etc.