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Ingredientbeginnerdraft

Oil

Also searched as: rapeseed oil, canola oil, sunflower oil, olive oil, frying oil

In short: Oil carries heat evenly to every spot on a surface and carries flavour.

Picture it

Like a bridge between pan and food: without oil, only the tip of every bump touches the heat.

What Oil does
ROLEPROCESScarries heat intoevery hollowfrying medium at160–190 °Cforms emulsions withwaterMaillard reactionDouble fryingEmulsion

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What happens

A surface is never completely smooth. Oil fills the gaps and brings the heat evenly everywhere, so the whole surface browns instead of just a few spots. How much heat an oil can take depends on whether it is refined or cold-pressed.

What the ingredient does

carries heat into every hollowMaillard reaction
frying medium at 160–190 °CDouble frying
forms emulsions with waterEmulsion

Rules of thumb

  1. For wedges, about 1 tbsp oil per 500 g is enough.
  2. Refined oil for high heat, cold-pressed for flavour at the end.
Sources · 1
  • Harold McGee: On Food and Cooking (2004), Kapitel Kartoffeln, Stärke, Frittieren