Some karo was poured into the bottom of a clean half pint jar, tap water added leaving about 3/4 to an inch of space up top, stirred to mix/dissolve the karo. Then the jar was covered with 2 layers of tyvec, and a sealing ring to hold it on. PCed for 25min at 15psi, cooled, innoced with 1/2 cc of Texas spore solution. After innocing the tyvec was 'sealed' somewhat to reduce air exchange so all the water doesn't evap using a piece of packing tape put across about 3/4 of it. This also covers your innoc point/hole.
About a week later, growth began. This is at 10 days. Nice pieces of mycelium all around.
*note: this is an .avi video file, xvid codec, no audio.