What collaborations has Adam Ringham been involved in to promote regenerative farming practices?

I'm sorry, but the available content doesn't directly address any collaborations Adam Ringham has been involved in to promote regenerative farming practices. However, Adam is passionate about sustainable and organic food practices, as evidenced by his use of ingredients like grass-fed organic beef and free-range eggs.

Would you like to know more about Adam's approach to food and sustainability, or perhaps his views on organic farming?