Positive attributes
Record fruitiness, bitterness, pungency, freshness and intensity. Match the oil to its use instead of buying only by label.
Tasting sheet
Olive oil tasting for restaurant buying
Structured tasting helps compare oils for bread service, finishing, cooking and retail display.
Defects
Watch for rancid, fusty, musty or winey notes. A low price is not useful if the oil weakens the dish.