Step 6: Flip
Now remove your rocks, and wash out the pan thoroughly. Dry the pan, then re-line it with waxed paper.
Set the pan upside-down over the jello on your counter, then flip both pieces together, taking care to support it thoroughly the entire time to avoid any cracks. If you've done it right, the jello will pop neatly into the pan.
Finally, pull off the plastic wrap and aluminum foil, and examine your bacony ridges. Success! All of that brownish stuff you see is actual bacon residue; had I chosen to filter more aggressively, it might all be pure bacon-fat-colored creaminess, but I liked the idea of some bacon bits. Your mileage may vary.