Out-of-season vegetables don't have that sweet taste, which is not your psychological effect. The ingredients of these guys are really different from their cousins produced in the wild. For example, the sugar content of tomatoes in greenhouses is really low, because the sugar storage in tomatoes is closely related to temperature. The experiment shows that the contents of fructose and sucrose in tomatoes grown at about 27℃ are obviously higher than those of tomatoes of the same index grown at other temperatures.

In addition to sugar content, temperature will also affect the special smell of tomatoes, and generally it takes more than 20℃ for aroma substances to accumulate to ripen. Moreover, even after ripening, the storage temperature should not be too low, otherwise the content of aroma substances will drop rapidly. Obviously, most greenhouses in winter can't fully meet the needs of tomatoes for warmth, which will naturally affect the performance of fruits.

In addition to temperature, not getting enough sunlight will also affect the performance of tomatoes. Proper light supplement can not only increase the sugar content of these fruits, but more interestingly, with the increase of light, sucrose will transfer to the center of the fruit and concentrate, leaving an acidic peel.

So which vegetables are out of season? The emergency reserve was moved out of the cold storage

The second out-of-season vegetable is rare, because there are really not many vegetables suitable for long-term storage, and the most common one is garlic bolt [tái]. Every April and May, this by-product produced in kind of garlic will flood the market. When stored and placed in winter, it becomes an out-of-season vegetable.

So it's not your psychological effect. The ingredients of these guys are really different from their cousins who produced in the field.