I absolutely love Twister jar works great for Nut Butter, mashed or riced cauliflower, pretty much anything that gets stuck in a regular blender. The only reason I took off one-star is because it is very small compared to the other Blendtec jars and you cannot fit much in at once. Using the regular lid to make normal shakes I would give it to 0 Stars if possible. I made one shake on smoothie setting walked out of the room as I normally do because of the loud sound and when I walked back in there was green sludge all over my kitchen the lid did not stay on and I had definitely sealed it correctly