Hey Pia! Buckwheat groats are essentially just the hulled version of regular buckwheat, sometimes referred to as kernels. Here are a few links to buckwheat groats (it can be a bit confusing as stores often don’t label them as such!):
Honest to Goodness: https://www.goodness.com.au/organic-australian—hulled-buckwheat-1kg/
Naked Foods: https://nakedfoods.com.au/products/organic-buckwheat-hulled
You can also find it at Woolies from the Macro brand.
Hope you enjoy the recipe!

Hey Issy! Yes, you can sub with oat groats or barley groats, these will provide that same texture with a slightly different – but still delicious! – taste.

Buckwheat groats – is there any substitute for this ingredient?

Any tips for finding activated buckwheat groats in Australia? I’ve never heard of them!