How should coffee beans be stored? Should coffee beans be stored in the refrigerator?

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I often hear guests ask, can you keep coffee beans in the refrigerator? I believe that many friends will have this doubt, put it in the refrigerator and whether or not to keep it in the refrigerator will have a great impact on the flavor of coffee? The editor was also curious, so he baked the oven [Honduras Sweet Orange Manor] and stored it in the freezer, in the freezer, and in a cool, dry place at room temperature.

| | Bean information |

Honduras El Naranjo

[Honduras Sweet Orange Manor]

Country: Honduras

Producing area: Makala Marcala

Altitude: 1425 m

Variety: Kaduai

Treatment: washing

Baking degree: shallow baking

| | experiment |

In order to reduce the impact of techniques on the flavor, the editor first used the smart cup to do a pot of comparison, basically consistent in the parameters. And the beans used in the experiment are also from the same furnace, the baking date is 2019.4.10, the cooking date is 2019.4.25, and the bean breeding period is 15 days.

Parameters: grindability BG 5R (Chinese standard 20 sieve pass rate 58%), powder / water ratio 1:15, water temperature 90 ℃, directly pour into about 225g of water and soak for 4 minutes, move the smart cup to the sharing pot to filter.

[room temperature]

The starting time of water injection and extraction time is: 4 minutes, 39 minutes, 30 minutes.

Flavor: it has sour citrus, floral aromas, sour notes of imported oranges and grapefruit, obvious sweetness of brown sugar and cocoa finish, with a slight woody flavor and a soft overall flavor.

[refrigerated]

The starting time of water injection and extraction time is: 4 minutes 39 minutes 31 ".

Flavor: it smells nutty and cocoa, with sour notes of imported citrus, a hint of rice and cream in the middle, and a touch of sucrose.

[frozen]

The starting time of water injection and extraction time is: 4 minutes, 39 minutes, 29 minutes.

Flavor: it smells floral, with sour notes of citrus, grapefruit and orange, with nutty, almond and cream aromas in the middle, with a hint of sucrose and tea on the finish.

The three pots brewed from the smart cup, the two pots stored at room temperature and frozen are more complete and rich in flavor, while those in the refrigerated state are more balanced. So I don't know what kind of flavor can be shown under the filter cup of V60?

Parameters: grindability BG 5R (Chinese standard No. 20 sieve pass rate 58%), powder / water ratio 1:15, water temperature 90 ℃, stage extraction.

[room temperature]

Technique: steam 28 grams of water for 28 seconds, quickly circle water injection to 125 grams of water cut off, continue to inject water to 226 grams when the water level is about to be exposed to the powder bed, remove the filter cup when the water level is about to be exposed to the powder bed, (the time of steaming starts) the extraction time is 1 kilogram 39 percent 53 "

Flavor: it smells of flowers and honey, with sour notes of imported oranges and grapefruit, peach and nut flavors emerge in the middle, and sucrose is sweet. The sweet feeling is relatively soft, and the overall flavor is partial to the fruit flavor.

[refrigerated]

Technique: steam 28 grams of water for 30 seconds, quickly circle and inject water to 127 grams, continue to inject water to 226 grams when the water level is about to be exposed to the powder bed, remove the filter cup when the water level is about to be exposed to the powder bed, (the time of steaming starts) the extraction time is 1 kilogram 39 percent 57 "

Flavor: it smells of nuts and a hint of rice, with sour notes of imported citrus and grapefruit, obvious sweetness of brown sugar and a balanced and full-bodied flavor.

[frozen]

Technique: steam for 31 seconds with 29 grams of water, small water flow quickly circle water injection to 125 grams, continue to inject water to 226 grams when the water level is about to be exposed to the powder bed, remove the filter cup when the water level is about to be exposed to the powder bed, and the extraction time is 2 minutes.

Flavor: it smells slightly floral, with oranges and blueberries in the mouth, with sweet brown sugar and honey. The flavor level is obvious, but the acidity is high and the taste is slightly astringent.

After comparison, we found that the sweet orange manor stored under [room temperature] and [frozen] conditions will have more obvious fruit flavor, and the flavor level is also more obvious. however, the sweet orange manor stored under the frozen condition will have some astringency and high acidity, while the sweet orange manor stored under the cold storage condition is more balanced and full-bodied.

Could it be because of the difference in bean temperature?

Because the [refrigerated] [frozen] beans are ground and boiled directly from the refrigerator, the caking phenomenon is quite obvious, so the editor puts the two packets of beans at room temperature and then takes them out for cooking, and the cooking parameters and techniques remain the same. It is found that whether it is smart cup or V60 filter cup and stored at room temperature, the beans will be relatively close in flavor.

When cooking, the editor found that the exhaust of the [sweet orange manor] steamed at room temperature was over in 27 or 28 seconds, while the exhaust that was taken out of the refrigerator without thawing and stored in [cold] [frozen] condition ended in about 30 seconds.

The editor analyzed that the time of steaming in the state of [room temperature] [cold storage] [frozen] is different, and the flavor is quite different, probably because the temperature of coffee powder is different, and the temperature of water in contact with coffee powder is different.

| | Summary |

After excluding the temperature difference of coffee powder, it is obvious that whether it is stored in the refrigerator or not will not have a great effect on the flavor of coffee. The editor suggests that beans should be stored directly at room temperature and stored in a dry and cool place, and there is no need to store beans in the refrigerator. After all, beans should be exhaust at room temperature or under cold or frozen conditions. Not to mention storing them in the refrigerator will easily attach the smell in the refrigerator.

END