Highlighting the actually not-so-secret world of mass food production, and product manufacturing in general. Streamlining is cheaper, hence single producers are contracted by various brands and chains to supply their needs. They’ve been doing it for decades. (That branded thing you like? There’s probably an own-brand equivalent that is literally the same product.) But there’s a cost for this efficiency, whether relatively benign (like ‘metallic-tasting’ hummus) or more significant from a public health standpoint (see the horse meat scandal, which was really about not knowing what was in the food, rather than that thing being horse meat).