mushroom latte/ mushroom coffee

Does anybody know where I can find the "coffee alternative" mushroom drink similar to Ryze or Mud/Wtr? I had a sip of one once and it was so delicious!

It tasted very chocolatey and not very much like coffee, but I'm very interested in trying one again. I know the coffee shop at Railway Heights used to serve them, but I didn't believe they do anymore.

Do any Houstonians have tips where I can either purchase these in the tea and coffee aisle at a store or coffee shops that serve them? Thanks so much!