
Why does oil float apart from water, and how can a dressing stay mixed? Find out what shaking does, how mustard helps tiny droplets hold together, and why a starch-thickened sauce gets thicker as it heats.

Why does oil float apart from water, and how can a dressing stay mixed? Find out what shaking does, how mustard helps tiny droplets hold together, and why a starch-thickened sauce gets thicker as it heats.