I liked 1.4 at first, but over time I am liking it less. I think I know why, and I think it’s the same problem others have: The umami flavor of soylent 1.4 is off the charts. Most complaints are about the texture being slimy or gross; umami flavor (it is sensed by your tongue so it is technically a flavor, but is is usually perceived as a texture) is that “goo that coats your tongue” sensation that soylent 1.4 has. If you check the wikipedia page, you’ll see that umami is unpleasant on its own but makes many foods taste better when it is present. I think what is going on is that soylent 1.4 has so much umami, and so little other flavor, that a lot of people get only the umami and are grossed out.
Wikipedia says that you taste umami when your tongue senses glutamates. Are there a lot of them in Soylent 1.4? Could they be toned down?