I am a true novice when it comes to Japanese green teas, so I'm using this OTTI as a way to learn about these types of teas. Prior to trying these teas, I'd only ever had Den's Sampler Pack and Den's Organic Sencha. I ordered a double OTTI, and boy am I glad I did. It leaves me some room for error and gives me more time to figure out my thoughts.
I tried the "O" first. It was ok. I didn't have any strong feelings about the tea one way or another. I may have brewed it a bit hot 160*, so I'll try it again at the recommended 140* to 149*. I used the 1:1 ratio.
This morning I tried the "S". The first time around I tried to follow TdJ's perimeters precisely.
The Umami flavors were just WAY too much for my novice palette. I could not even drink the first infusion. For the 2nd infusion, I used more water to get to a 1:1 ratio. The resultant cup was infinitely more drinkable. Still, I'm not a fan of the pronounced umami and bean flavors. I don't care for Den's Fukamushi either, so I guess this style is just not for me. I'll try "S" again just to be sure.