Zak Haddad has been kickstarting his day with a cup of coffee infused with lion's mane - a type of mushroom - for the past three years.
He says it gives him a "really clear, focused feeling", without the "spike and crash you can sometimes get from strong coffee".
Coffees made with extra ingredients like mushrooms, protein and collagen are known as "functional coffees" - which aim to provide consumers with benefits beyond the typical caffeine boost.
For years they've been a familiar sight in the aisles of health food stores, but more recently they've been cropping up in high street coffee shops too.
So when Zak opened his own coffee shop - Sipp in Chorlton, Greater Manchester - in late 2023, he was eager to include mushroom coffees on the menu.
