What gives fresh milk its green apple edge?
Milk reads as clean and neutral — but its volatile profile tells a different story. The same aldehyde that defines unripe apple sits at the top of milk's aroma stack, at a concentration that dwarfs its neighbors.
The green-apple signal is real and measurable, but hexanoic acid pulls the nose back toward the barn — which is why milk registers as 'milky' rather than orchard fruit. Strip that acid out, and the resemblance to apple juice becomes hard to ignore.
See exactly how far over the detection threshold each compound is — the part of the chemistry that explains why this pairing works. Plus the full ranked list for any ingredient, compound index, and Compare tool.
OAV (Odor Activity Value) = concentration ÷ detection threshold. Numbers above 1 mean the compound contributes detectably to aroma.