Mystery shopper here.
I have been asked to mystery shop various outlets recently with a specific focus on allergies and ingredients. I suspect various large companies of being completely negligent in their training and would like to recount a couple of examples. (None of these involve milk or Costa).
me, standing in front of an ice cream display with pistachio ice cream clearly labelled - my friend has a nut allergy. Can you tell me if she should be avoiding any of your ice creams?
member of staff (MOS) - all our ice creams are fine for her to eat.
me - that ice cream there, what does that contain?
MOS - hazelnuts, [various other things]
me - oh. So that is just hazelnut flavouring, not real NUTS?
MOS (thoughtfully) - ooooo......
(In this example, and various others, it seemed to me that MOS believed that nut allergy = peanut allergy and nothing else.)
Example 2
me - my friend is Muslim. Could you tell me which of your hot slices are halal?
MOS - they all are
me - oh good. I'll take the cheese and bacon one.
MOS - packages up cheese and bacon slice with no further comment. (Yes, it was real bacon from a real pig).
Example 3 - a good one
me - can you tell me how you are sure your cakes are gluten free and don't get cross-contaminated with the ordinary ones?
MOS - our GF cakes are cooked in a separate bakery, sealed into their packaging, and not opened until the customer buys and opens them.