Your Sumatras (regular and decaf) make excellent cold brew because of their strong, heavy bodies. They're both pungent without being bitter, and blend well with each other and other coffees.
I've been buying Acoustic Coffees for awhile now (Feb 2024), and trying different blends along the way. I absolutely love the Tommy Emmanuel Signature blend! But the Harmonic and Melodic blends are right up there with Tommy Emmanuel Signature blend, as well. This time, I decided to try Jake's blend (won't even try to spell his name lol). I started out getting just enough beans to make one pot because I really wasn't sure, to be honest, that I was going to like it. But Oh.My.Goodnes! It exceeded my expectations, for sure! GREAT flavor with a smooth, clean taste, cup after cup. Every cup tastes a clean and fresh as the first! I'll definitely be buying more of this blend!! No offense, Tommy E, but Jake's blend is currently my new favorite blend.
Truly delicious coffee that arrived promptly.