This is the older companion of the mushroom described at observation 243105. The only real differences between the two are the color of the cap context (this was white with a bare hint of yellow, and that was pale yellow), and the proportion of context to tubes (this was about 2.5:1 and that was 9:1). The whole mushroom was accordingly just a bit less dense, though even this older one was very noticeably solid and "cheeselike" compared to other boletes.