I agree with you completely. It is unheard of to receive an ingredient that has been completely processed and then say, but wait, it could have metal
We uses literally 100's of gallons of vinegar a year and I would not ever list this as a possible hazard. The very process of making liquid acidulants generally is with a still of some sort and filters........so I'm having a hard time understanding where you determine that these products could contain metal?
Yes, the HA should always been done on every incoming ingredient, but you can't then determine a hazard AT RECEIVING and then push it back a step to the manufacturer...........just remove this from your HA
A basic GMP auditors should not be telling you your HA isn't good enough...........GMP good manufacturing practices...........not the same as HACCP or a GFSI
Now granted, there are some ingredients that may have foreign material---field veg, pulses and grains.......but that is different than a manufactured item such as in your case. Have another look at the anylisis......you just simply cannot say an ingredient has a known hazard risk and then not deal with it in house