A tandoor runs at around 480°C

The clay walls store ferocious heat, so naan cooks in about 60 seconds. The dough sticks to the wall because it is slapped on wet and steams itself off when done.

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Chocolate has six crystal forms — only one is good

Cocoa butter can set in six different crystal structures. Tempering coaxes it into Form V, the only one that snaps cleanly and shines instead of turning dull and grainy.

Latte art only works with microfoam

Good steaming makes bubbles so small the milk becomes a glossy paint. Big bubbles float on top and the pattern collapses before the cup reaches the table.

Bread rises on carbon dioxide bubbles

Yeast eats sugars in the dough and exhales CO2, which gets trapped by gluten. In the oven the trapped gas expands fast — that final surge is called oven spring.

3,000-year-old honey is still edible

Honey is so low in water and so acidic that bacteria cannot grow in it. Sealed pots found in Egyptian tombs were still unspoiled thousands of years later.

Ramen noodles are springy because of alkaline water

Kansui — alkaline mineral water — changes how gluten links up, giving ramen its yellow tint and bouncy chew. Without it, you get pasta, not ramen.

Crema is dissolved gas escaping

Nine bars of pressure force CO2 trapped in roasted coffee into the water. When the pressure drops in the cup, it comes back out as that hazelnut foam.