Description
Autoxidation or hydrolysis of fats and oils
Technical
Rancidification is the process of complete or incomplete autoxidation or hydrolysis of fats and oils when exposed to air, light, moisture, or bacterial action, producing short-chain aldehydes, ketones and free fatty acids.
Sensory Profile
Aroma ()
paint-likecardboardstalemetallicsour
Wine Analogy
Cork taint (TCA contamination)
Coffee Analogy
Stale pre-ground coffee
Perfume Analogy
Oxidized citrus top notes
Culinary Applications
Aged beef fat (Chinese cuisine)Sichuan provinceControlled rancidity develops umami
Rancid butter sauce (French cuisine)NormandyTraditional flavor enhancer
Hongeo (Korean fermented skate)Jeolla regionNatural urea breakdown creates characteristic ammonia notes
Dietary
VeganVegetarianGluten-FreeHalalKosherlipid oxidation products may trigger sensitivities