If you've shopped for mushroom coffee, you've mostly seen lion's mane. It's the default in this category. Chaga is less common — it's what we use — and the two are genuinely different things, not interchangeable versions of the same idea.
Here's a plain comparison.
They're not the same kind of organism
Lion's mane is a mushroom in the way most people picture one: a white, shaggy, fruiting body that grows on hardwood, cascading in strands. It looks like something you'd cook.
Chaga is a sterile conk — a hardened mass that forms on living birch trees, usually in cold climates. Black and cracked outside, rust-orange inside. It looks like burnt bark. It isn't harvested and eaten the way a culinary mushroom is; it's extracted.
They taste different
This is the part that actually affects your morning.
Lion's mane has a mild, slightly seafood-adjacent character some people describe as crab-like when cooked. In coffee it's usually subtle, but a portion of drinkers notice it — and once noticed, it's hard to un-notice.
Chaga is woody, faintly vanilla-ish, and mild. At the amounts used in coffee, with a decent extract, it disappears into a medium roast.
Neither will make your coffee taste like a mushroom dish. But chaga is the more forgiving of the two in a cup, which is a large part of why we chose it.
Where they come from matters
Lion's mane is widely cultivated. Chaga is mostly wild harvested, because it grows on living birch trees in cold forests and doesn't farm easily.
That's worth knowing as a buyer, in both directions: cultivation means consistency and supply; wild harvesting means the sourcing and the supplier matter more.
What we won't tell you
You'll find a lot of writing comparing what these two do for your body. We're not going to add to it. What we can tell you is what's in our bag, in what amount, and where it came from — and let you decide.
What's in ours
500mg of wild harvested chaga extract per serving, plus 100mg of L-theanine from green tea, in 100% Arabica coffee from South America, small-batch roasted in Florida. No added sugar, no filler, and every amount printed on the bag.