I am looking for a simple way to estimate price time series of downstream products based on price of the main "raw" commodity.
For example, would like to estimate a price for wheat flour based on available wheat price data and wheat per unit weight flour conversion factor.
Some cursory googling seems to suggest that there is no standard way to do this. How would a quant go about such a task?
Incidentally, if anyone knows of a source for readily available flour price data, please let me know.