You can test clothing for flammability, then again if the design materially changes. Food doesn't work this way - each jar has a low chance of contamination, s

You can test clothing for flammability, then again if the design materially changes. Food doesn't work this way - each jar has a low chance of contamination, so spot testing won't catch the problem. Small changes in manufacturing procedure can result in big changes in safety. source: worked in the wholesale food industry, across 300+ categories.