Never heard of Spirulina or Macha and have not tried Wheatgrass. Blueberries and Olives are on my regular shopping list.
I think in my case, the foods I don’t have very often would be Mexican or Japanese, otherwise I think we have a pretty varied diet, although if Macha and Spirulina are a British Staple then I’m obviously wrong 
About how over 60s have not tried many of the 'staple' foods that millennials love
(Having canvassed some of the millennials at GNHQ/MNHQ none of them eat spurulina and matcha either.. and for some of the 'shunned' foods (eg salmon) it turns out only 4% haven't tried )
Anyway thought it would be interesting to see what you think. I can see that spirulina and wheatgrass won't be a large part of most people's diets (and I think they may slightly be generalising about millennials here 
) but are blueberries and olives really so outlandish?!
www.mirror.co.uk/news/uk-news/top-50-unusual-foods-over-12092403
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