Does it bug you too that grandma never knew the why behind her own trick? Mine always said stuff like that and I never got a straight answer. The thing is she was right and the reason is the water temp, once it starts bubbling you're already past the good stuff and heading straight into burning it or pulling out all the harsh oils. So the move is really about timing the heat, not the bubbles themselves. What gets me is how many of these old kitchen habits turn out to have real reasons behind them once you actually sit down and figure them out.

Ever wonder how much a small grade can change the game? A buddy of mine had a pump setup on what looked like flat ground until the bubble said 7 percent, and the rear outrigger started sinking a little after the first few yards went out. He ended up cutting and stacking 4x4 pads right there on site, which ate up time but saved him from a much worse morning.