CRYSTALLINE VITAMIN

When viewed through a microscope fitted with polarizing lenses, a crystal of vitamin C takes on a colorful fractal appearance....[More]

CRYSTALLINE VITAMIN

When viewed through a microscope fitted with polarizing lenses, a crystal of vitamin C takes on a colorful fractal appearance.  [Less] [Link to this slide]

Granules of potato starch form shapes in this photomicrograph.

pH EFFECTS

The color of some foods shifts dramatically when their environmental pH changes. Even the difference in pH between hard tap water and purified, de-ionized water can have visible effects on the brightness of some greens....[More]

pH EFFECTS

The color of some foods shifts dramatically when their environmental pH changes. Even the difference in pH between hard tap water and purified, de-ionized water can have visible effects on the brightness of some greens. Red cabbage juice undergoes dramatic shifts in hue as the pH rises from a highly acidic 2 [far left] through a neutral value of 7 [purple flask at center] to a highly alkaline 13 [far right].  [Less] [Link to this slide]

WATER BALANCE

Fresh foods are mostly water—so to understand cooking, you must appreciate the unusual chemistry and physics of water in all its forms. These graduated cylinders show the percentages of the mass of various foods that comprise water (clear liquid) and fats (yellow liquid)....[More]

WATER BALANCE

Fresh foods are mostly water—so to understand cooking, you must appreciate the unusual chemistry and physics of water in all its forms. These graduated cylinders show the percentages of the mass of various foods that comprise water (clear liquid) and fats (yellow liquid). From left to right: cucumber, whole milk, pork belly, pork loin, red wine, walnut.  [Less] [Link to this slide]

COOL TRICK

Next time you throw a party, try this fun trick with supercooled water. Place a clean bottle of pure water in the freezer for a couple hours until it is very cold but not yet frozen....[More]

COOL TRICK

Next time you throw a party, try this fun trick with supercooled water. Place a clean bottle of pure water in the freezer for a couple hours until it is very cold but not yet frozen. Then gently pour it from a height into your guests' glasses and watch the water freeze on contact.  [Less] [Link to this slide]

HOPPING HOT

Water droplets skitter across a screaming hot griddle because the part of the droplet that hits the hot metal bursts into steam and forms an ultrathin layer of vapor that suspends the droplet....[More]

HOPPING HOT

Water droplets skitter across a screaming hot griddle because the part of the droplet that hits the hot metal bursts into steam and forms an ultrathin layer of vapor that suspends the droplet. This phenomenon, called the Leidenfrost effect after the German doctor who described it, also occurs when liquid nitrogen droplets are spilled onto a surface at room temperature, as shown here.  [Less] [Link to this slide]

STEAMING CROSS-SECTION

When steam condenses back into liquid water, it deposits an enormous amount of energy—the so-called latent heat of vaporization—on the surface supporting the water....[More]

STEAMING CROSS-SECTION

When steam condenses back into liquid water, it deposits an enormous amount of energy—the so-called latent heat of vaporization—on the surface supporting the water. We thus expected steaming to almost always be faster than boiling at cooking vegetables. But when we did experiments to test this idea, the reverse turned out to be true: nearly all vegetables actually cook faster in boiling water than they do in steam. A subtle phenomenon, called film condensation, slows the transfer of heat from the steam into the food. Modernist Cuisine includes 36 cutaway photos like this one. To slice apart pots, grills, rotisseries and ovens, the publishing team used tools including an abrasive water-jet cutter, an electrical discharge machine and an industrial band saw.  [Less] [Link to this slide]

INSIDE YOUR GRILL

Hamburgers cooked over a bed of coals are irradiated to perfection by infrared waves. Grills cook foods mainly through radiant heat, so the sweet spot of the grill—where food cooks evenly—is affected by the height of the grill above the coals....[More]

INSIDE YOUR GRILL

Hamburgers cooked over a bed of coals are irradiated to perfection by infrared waves. Grills cook foods mainly through radiant heat, so the sweet spot of the grill—where food cooks evenly—is affected by the height of the grill above the coals. But the temperature of burgers in the center of the grill hardly varies at all with height.  [Less] [Link to this slide]

EDIBLE FOAM RULES

Edible foams, like the vacuum-inflated chocolate shown here, follow the same simple geometrical rules that all foams do. Among those rules: the intersection of bubbles always joins exactly three films and each pair of films always stabilizes at an angle of exactly 120 degrees....[More]

EDIBLE FOAM RULES

Edible foams, like the vacuum-inflated chocolate shown here, follow the same simple geometrical rules that all foams do. Among those rules: the intersection of bubbles always joins exactly three films and each pair of films always stabilizes at an angle of exactly 120 degrees.  [Less] [Link to this slide]

SWEET STOCKING STUFFER

With modern culinary tools like vacuum chambers and ingredients like gum arabic and trehalose, innovative chefs can create delicious dishes that fool the eye....[More]

SWEET STOCKING STUFFER

With modern culinary tools like vacuum chambers and ingredients like gum arabic and trehalose, innovative chefs can create delicious dishes that fool the eye. These airy "coals" are entirely edible and actually quite tasty. They are made from prunes, Armagnac, sugars and baking soda. The baking soda produces bubbles of carbon dioxide, which swell when the food is placed in a vacuum chamber.  [Less] [Link to this slide]