Four Sigmatic Mushroom Coffee Review: What Does It Taste Like and Is It Good for You?A review of the top Four Sigmatic mushroom coffee products and the benefits, safety and side effects of drinking mushroom coffee. Amber Sayer, NSCA-certified personal trainer | Mar 31, 2023Four Sigmatic Mushroom Coffee Review: What Does It Taste Like and Is It Good for You? / Published Mar 31, 2023AMBER SAYER, NSCA-CERTIFIED PERSONAL TRAINER