They've gone with a classic cheeseburger for their Taste Icon flavouring with Walkers.
I can't say much about there being a beef-like flavouring in there but what I feel like I can taste (but doesn't seem to be in the ingredients) is a really nice dill pickle tang - Dill pickle really is the best flavouring you can get on crisps in the US of A.
Sure there's a sweet tomato flavour (pretty much prawn cocktail) and a slight tinge of cheese - but the best of the flavour is in that pickle and a little, very welcome hint of mustard.
8.5/10