I went into the local health food store to buy some whey, which had been suggested as a natural preservative when making mustard.
I didn’t get what I was after, but I did find Egg-free Mayonnaise.
I guess this disqualifies them as a health food retailer, and as a food retailer. Mayonnaise is, by definition, an emulsion of egg yolks and oil. Take the eggs away and you have oil. I didn’t venture to determine the substitute ingredients, but shudder at the thought alone.
Can’t be healthy. Can’t be tasty.