Tempura

A Portuguese accident

Tempura is one of Japan’s most famous dishes — and yet it came from outside. Portuguese Jesuit missionaries in 16th-century Nagasaki cooked battered, fried green beans during the Catholic Quatuor Anni Tempora fasting periods, when meat was forbidden. The Japanese borrowed both the technique and (loosely) the name. The original Portuguese dish has since vanished from Portugal, but tempura became central to Japanese cuisine.

Why the batter is so light

The signature crisp, lacy tempura crust depends on avoiding gluten development:

• Cold (often ice-water) liquid keeps the batter slack.
• Wheat flour with low protein — sometimes mixed with rice flour.
• Mix lightly and briefly — lumps are fine; over-stirring is ruinous.
• Use immediately — gluten develops on standing.

The result is a thin, almost transparent crust that shatters at first bite.

The proper dipping sauce

Authentic tentsuyu is dashi-based: a mixture of dashi stock, soy sauce, and mirin, served warm with grated daikon and ginger to cut the oil. Western tempura is often served with sweet thicker sauces that obscure the dish’s delicacy.

Tempura specialty restaurants

In Tokyo and Osaka, dedicated tempura kappo restaurants serve omakase-style: the chef fries each piece to order in front of you, plating it directly so it’s eaten within seconds. Frying oil is often a blend (sesame and vegetable) for flavor; the temperature is held tightly between 170 °C and 180 °C with constant adjustment.