How to preserve local vegetables
Recently, among the hot topics on the Internet, food safety and food preservation methods have attracted much attention. Especially in spring, wild vegetables such as field vegetables (also known as shepherd's purse) are on the market in large quantities, and how to scientifically preserve them has become a hot topic. The following is provided for you based on the hot content of the past 10 daysThe Complete Guide to Preserving Local Vegetables.
1. Related data of hot topics across the entire network
| Hot search keywords | heat index | Related platforms |
|---|---|---|
| Safety of spring wild vegetables | 1,280,000 | Weibo/Douyin |
| Food preservation tips | 980,000 | Xiaohongshu/Baidu |
| How to preserve shepherd’s purse | 650,000 | Zhihu/xiakitchen |
2. Core methods for preserving local vegetables
According to actual measured data from agricultural experts and food bloggers, there are four main ways to preserve local vegetables:
| Save method | Operation steps | Save duration | Suitable for the scene |
|---|---|---|---|
| Refrigeration method | 1. Select old leaves 2. Kitchen paper wrap 3. Sealed bags | 3-5 days | short term consumption |
| freezing method | 1. Blanch for 30 seconds 2. Squeeze out the water 3. Divide and freeze | 3-6 months | long term storage |
| Pickle and preserve | 1. Salting and dehydration 2. Add seasonings 3. Seal and refrigerate | 1-2 months | Flavor requirements |
| Dry storage | 1. Dry in a cool place 2. Vacuum packaging 3. Store away from light | 6-12 months | medicinal needs |
3. Comparison of storage effects and actual measurement
A food evaluation team conducted a comparative experiment on four methods, and the results are as follows:
| Evaluation dimension | Refrigeration method | freezing method | Pickle and preserve | Dry storage |
|---|---|---|---|---|
| Nutrient retention rate | 85% | 72% | 65% | 58% |
| Taste restoration degree | 95% | 80% | 70% | 40% |
| Ease of operation | ★★★★★ | ★★★★ | ★★★ | ★★ |
4. Special reminder from experts
1.Preprocessing key: No matter which method is used, yellow leaves and old roots need to be removed before storage, and soaked in light salt water for 10 minutes to sterilize.
2.moisture control: When freezing and storing, it is recommended to divide it into small portions (about 100g/portion) to avoid repeated thawing.
3.time stamp: All sealed containers should be marked with a shelf life. It is recommended to use aluminum foil bags instead of ordinary plastic bags for freezing.
4.Thawing tips: When using frozen vegetables, put them directly into the pot without defrosting to maintain the green color to the greatest extent.
5. Innovative preservation methods
In the recent popular Douyin Vegetable Preservation Challenge, netizens developed two new methods:
1.Oil seal method: Mix blanched vegetables with olive oil at a ratio of 1:1 and freeze them to keep them fresh and make vegetable oil.
2.Ice tray storage: Pour the vegetable puree into the ice tray and freeze it, suitable for making complementary food for babies or making soup.
According to the latest "Dietary Guidelines for Chinese Residents" recommendations, although wild vegetables are good, they should not be eaten in excess. It is recommended that the intake should not exceed 500g per week. Only by mastering scientific preservation methods can the limited delicacies of spring last longer.
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