This is fast food, and it’s real good food too. If you’ve never had a portobello burger before, your world is about to change. Although if we are being critical, there is never a moment where the world – and by proxy our own individual worlds – isn’t changing. So it’s more realistically a matter of magnitude of change, not change vs. no change. Okay, back to the food. Shrooms are meaty, flavourful, savoury delights.