How to Taste, Store and Use Olive Oil
Taste olive oil with repeatable methods of smelling, tasting and recording, and integrating preservation and cooking into the same set of judgments.

The purpose of olive oil tasting is not to perform technical terms, but to separately record the feelings after smelling, tasting and using it. Professional sensory evaluation has strict cup, temperature and review processes; although home and catering scenes are not equivalent to official classification, preconceptions caused by packaging, colour and price can be reduced through unified steps.
Colour is not a determining factor in the grade of extra virgin olive oil. Chlorophyll, carotenoids, variety and ripeness all affect colour, so professional tastings often use colored cups to block the colour. There is no need to pursue equipment during ordinary tasting. What is important is that the cup is clean, the environment has no strong smell, and different samples are placed in similar conditions.
Step one: smell the fragrance
Pour in a small amount of oil, gently wrap the bottom of the cup with your palms, let the oil temperature slowly approach body temperature, and then cover the mouth of the cup for a short time to gather fragrance. First note whether the aroma is clear, then describe the associations that come to mind with grass, tomato leaves, vanilla, apples, almonds or ripe fruit. The description is a sensory association and does not mean that these ingredients are actually added to the oil.
If there is obvious odor, mildew, vinegar or rancid aroma, you should remain cautious. A single scent may be affected by the cup and environment, and can be reviewed after a break; the official grade still needs to be judged by a qualified laboratory and a trained sensory panel.
Step Two: Entrance and Aftertaste
Hold the oil in a small mouth to cover your mouth, and then gently inhale a small amount of air to help the aroma ascend. Note whether the fruity aroma persists, where the bitterness appears, whether the texture is light or rounded, as well as the pungency in the throat after swallowing and the length of the aftertaste. Bitterness and pungency can be positive characteristics, the key is whether it is clean and harmonious.
When tasting multiple products in a row, clean your mouth with water and mild-smelling food, and control the number of samples. Do not dip the bread into the first round of judgment, because the aroma, salt and texture of the bread itself will change the feeling; complete the individual tasting before entering into the pairing test.
Step 3: Create usage records
Try using the same oil sparingly on tomatoes, leafy greens, beans, toast, fish and soups. Note whether it enhances the ingredient, provides a bitter-spicy texture, or masks the original flavour. The catering team can translate the results into recommendations for cold dishes, cooking and garnishing.
There is no need to have as many tasting words as possible. Using several fixed dimensions of aroma, strength, balance, imperfections, aftertaste and adaptability to dishes makes it easier to compare between different batches and avoid mistaking personal preferences into absolute quality conclusions.
Save to decide next tasting
Light, heat, oxygen, and time continue to change oil properties. Seal the bottle and keep it away from stoves, windows and places with large temperature fluctuations; do not store it in open oil bottles or transparent containers for a long time. When purchasing large packages, you should evaluate the actual consumption rate and use clean, light-proof and sealed containers for dispensing.
The date of opening is more reliable than memory. If the aroma gradually flattens out and develops a crayon or old nut smell, it means that the sensory state has changed, even if it is still within the labelled expiration date. Product safety and shelf life are determined by the label, and the best flavour period needs to be determined based on opening and storage conditions.