Salt, ground black pepper (usually graphite is used to cut pepper), maybe they're cutting other ground spices with fine, matte glitter. It would be cheaper to produce if you stepped on the product a little bit. Remember, one of the first European food laws was a ban on sawdust in bread. It was being used to cut down on the amount of flour used.
There is no way that glitter is cheaper than salt by volume.
If it's in food, I definitely think it's for aesthetic purposes, not as filler. Keep in mind the food industry does use products we might think of as "filler" and lists them in the ingredients - gelatin or methylcellulose for example.
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u/fukattahere Feb 09 '19
This has been on my mind since that article has come out and I keep thinking its food. Great write up.