Four Sigmatic Focus Coffee with Lion's Mane (formerly Think)

250mg lion's mane + 250mg chaga per serving (label), dual-extracted per the maker, organic coffee; sold as a ground bag or as instant packets (10 per box, 50mg caffeine each; the instant version also adds rhodiola). One of the brands that popularized mushroom coffee in the US, and reviewers often describe the taste as coffee-forward. A widely available starting point for mushroom coffee newcomers.

Four Sigmatic is one of the brands that popularized mushroom coffee in the US. The Focus label lists 250mg of lion's mane and 250mg of chaga per serving with organic coffee, and the maker describes the mushrooms as dual-extracted (hot water + alcohol), which concentrates their compounds. It comes as a ground bag or as instant packets (50mg caffeine per packet; the instant version also adds rhodiola extract). Reviewers often describe the taste as coffee-forward with a mild earthy note — not medicinal. It is priced above plain coffee, so compare the per-serving cost of the packets and the ground bag before buying for regular use.

▶ Video review

Four Sigmatic Focus Coffee Review (mushroom coffee??)